Betty Boop

Betty, Bimbo and Koko are the owners of a travelling medicine show. They are selling "Jippo", an all-purpose health tonic. Koko's contortionist display doesn't convince the local townsfolk to open their wallets, but Betty gets the whole town eager to buy their product. Even though it's only water, drinking the tonic causes everyone to exhibit strange side-effects, from unusual hair growth to rapid de-aging.