Szalinski Zip Enhancer

The Szalinski Zip Enhancer is one of many experimental inventions (featured in the episode "Honey, We're Young At Heart") which revitalizes an old person by transferring some of a young person's energy.

Description
The Szalinski Zip Enhancer is designed for use by four people at a time: two individuals (presumably younger) who will contribute their “youthful zip”, and two other individuals (presumably older) who will receive said transfer. The two pairs sit on the prototype's opposite sides to have transparent helmets lowered over their heads which then transfer energy from one side to the other. The machine was designed to revitalize elderly people who receive the transfer without hurting the younger people who give it. But the machine ended up having completely unintended effects that harmed both parties: those who receive will age in reverse while those who give experience aging rapidly. If this process were allowed to continue for more than two days, it would likely be fatal to all four users. Thankfully, the one time that the Szalinski Zip Enhancer was used, the Szalinskis were able to reverse its effects before anyone died. Once the effects are reversed, all four users immediately return to their original ages, but the older pair retains some "zesk for life", and no lasting effects on the younger pair once the effects are reversed.

Plot Overview
The Szalinski Zip Enhancer is first used in transferring the "youthful zip" of Wayne and Diane into the McGanns; Wayne wanted to test the prototype for a potential scientific grant and self-employment, and Diane wanted to selflessly help the elderly, senile couple that their daughter Amy has been volunteering for after school. After the cellular vitality enhancement is activated by their son Nick, the prototype overloaded yet apparently worked as the McGanns come out of their senility and leave while the Szalinski parents what it's like for an elderly couple. In actuality, the prototype transferred too much energy, causing Wayne and Diane to experience aging at a rapid "rate of accleration" and the McGanns to age "backwards at a similiar rate", having the next 48 hours to "reverse the process or else". While the Szalinski children search for the McGanns, Wayne and Diane attempt to fix the prototype and use the plants as placeholders. Amazingly, Wayne manages to repair the machine and Diane makes phone calls that cover his and her absences while Amy and Nick continue tracking the McGanns. After some effort, Amy and Nick arrive with the McGanns and the Szalinski Zip Enhancer's second usage restores the ages of the McGanns and their parents to normal in front of the grant judge who is impressed that Wayne and Diane has instantly transformed from elderly to normal. The McGanns leave, but Wayne and Diane notice the elderly couple have some "zesk for life", thus achieving the original intension.

Symptoms
Within 48 hours (starting at 5:00pm), Wayne and Diane experience the following symptoms while aging rapidly:


 * Greying Hair — The first symptom to appear after using the machine is greying hair. By 7:00am (14 hours), Diane and Wayne have some grey hairs; the former initially noticed one grey hair which she plucked away and thought nothing of, and the latter went unnoticed due to his protective cap. Between 5:00pm and 9:00pm (24 and 28 hours), Diane's hair had gone silver by the time she returned from the store and Wayne’s hair also has gone grey. Between 7:00am and 10:00am (38 and 41 hours), Diane’s hair was totally grey as what was left of Wayne’s hair. By 2:00pm (45 hours), their hair had gone completely white.
 * Wrinkles — Both Diane and Wayne develop extensive wrinkles after their donation. Between 5:00pm and 9:00pm (24 and 28 hours), Diane’s wrinkles are particularly pronounced around her eyes and above her mouth while Wayne’s wrinkles are most noticeable on his forehead. From 7:00am (38 hours) onwards, their wrinkles continue to accumulate while “pushing ninety” as both have lined, thick, and saggy skin.
 * Hair Growth — Wayne's hair grew at an accelerated rate while aging rapidly, reaching nearly a foot in length at the very back of his head by 2:00pm (45 hours). It's possible that Wayne’s hair grew the amount it would have grown during a natural aging process. Strangely, Diane’s hair does not grow at all (for reasons that are never explained).
 * Digestive Issues — Wayne has this problem as he aged rapidly. By 9:00pm (28 hours), Wayne starts showing signs. From 7:00am (38 hours) onwards, Wayne's digestive issues are apparent.
 * Slowed Movement — Diane and Wayne begin to move more slowly as they aged rapidly. By 7:00am (38 hours), Diane and Wayne slowly putter around the house rather than moving at their usual speed, going slower and slower as time goes on.
 * Fatigue — Diane and Wayne get increasingly fatigued during their aging process. This is first noticeable at 5:00pm (24 hours) when Diane returns home with groceries; she is not yet aware of her advanced age and remarks that the grocery bags feel like “sacks of lead potatoes”. At 7:00am (38 hours), both are fatigued; Diane falls asleep mid-sentence but finished said sentence but eventually falls back asleep while Wayne briefly stands up but sits back down and then promptly falls asleep. Neither is unable to wake up right away afterwards. At 10:00am (41 hours), Wayne is also in need for “Bengué” for his back.
 * Male Pattern Baldness — Wayne to developed male pattern baldness at an accelerated rate after using the machine. Wayne’s hairline had receded noticeably by 5:00pm (24 hours), and continued to do so over the next several hours. He had lost most of his hair by 7:00am (38 hours) and his balding process was complete by 2:00pm (45 hours).
 * Liver Spots — Wayne develops liver spots. These are highly visible when Wayne looks “mummifiéd” by 2:00pm (45 hours).
 * Colloquialisms : Diane says words like “dandy” and “dickens” at 10:00am and 2:00pm (41 and 45 hours) respectively. While those are common terms earlier in the twentieth century to which elderly people who grew up then continue to use, Diane using these terms can be explained with her and Wayne posing as Wayne's elderly parents.
 * Vision Loss — Diane appears to experience significant vision loss as part of the aging process. This is evident when she is shown wearing glasses by 7:00am (38 hours). Her vision deteriorates further as she must strain her eyes and adjust the glasses repeatedly at 2:00pm (45 hours).
 * Hearing Loss — Wayne experiences hearing loss. At 3:00pm (46 hours), Wayne's hearing gradually gets worse. This is evident when Diane asks him from across the room whether they'll be “seeing our little Wayney” to which he responds there “not a cloud in the sky”, suggesting he misheard his own name as rain.
 * Tooth Loss — Wayne loses all of his upper teeth at some point during the aging process. This is evident at 3:00pm (46 hours) when a set of false teeth fall out of Wayne’s mouth while he's talking, forcing him to slowly reinsert the teeth. It's unclear when Wayne’s teeth fell out, whether they fell out one by one or all at once, or when he had time to get false teeth made.
 * Senility — Diane & Wayne eventually go senile around 4:00pm (47 hours). It is unclear whether this is the result of a long process, or something that arises all at once. Diane and Wayne do appear confused and forgetful, notably with Wayne mixing up words by 7:00am (38 hours) and Diane having trouble recognizing people at 2:00pm (45 hours). However, that confusion is also explicable as a result of Wayne's hearing problems, Diane's vision problems, and both with fatigue. Given that Diane and Wayne aged several decades and untreated dementia typically progresses much faster than that, it is unlikely that Diane and Wayne would have begun to experience dementia at 7:00am (38 hours) but only be completely senile around 4:00pm (47 hours). Wayne & Diane completely forget what they’re doing & begin babbling based on word association (“Moon, what moon?” “Moon over Miami!” “Oh, I remember that! Wait, I don’t remember that…” “Remember what, honey?” “Something about a baboon.” “Balloon!” “Macaroon!”).