Archie's Weird Mysteries (1999)

S1E13 Twisted Youth

The water supply in Riverdale has been contaminated with a chemical that reverses aging, causing all the town's adults to regress into their teenage selves. This unexpected transformation includes Mr. Lodge and Mr. Weatherbee, who find themselves gearing up for a drag race, while Miss Grundy develops a crush on Reggie. The town is thrown into chaos as familiar faces navigate their newfound youth and the complications that arise from it.