“The Jimmy” — Season 6
After the guys of “Seinfeld” finish up a basketball game with a man named Jimmy — who always refers to himself in the third person — they become intrigued with his special training shoes. Due to the new shoes, Kramer is mistaken for a mentally challenged person — and the novocaine from a dental visit that won’t wear off doesn’t help, either. Kramer drools all over the floor and speaks awkwardly (still wearing the silly looking shoes) — which is why he’s mistaken for an “able, mentally challenged adult.”
“The Checks” — Season 8
Jerry does a bit for a Japanese TV program and as a result receives hundreds of royalty checks — worth 12 cents each. Kramer makes Japanese friends on the street and decides to host them in his new dresser drawers. (Need we say more?)
“The Merv Griffin Show” — Season 9
Jerry, George and Elaine take turns “drugging” Jerry’s girlfriend just for a chance to play with her vintage toy collection. The entire episode makes plays about “date rape.” The idea of drugging a person you’re dating to get access to some of that person’s possessions … hmm. Not much of a crowd pleaser.