I don't remember which episode it was in, but Kramer is explaining why he's in such bad shape. He was riding the bus and a mugger attacked the bus driver (I think). Kramer beats him up, but the bus driver passes out and Kramer "driving the bus"!!! Then the mugger wakes up, and Kramer's fighting him off then tosses him off the bus "at the next stop" Jerry: "You kept making all the stops?" Kramer: "Well the people kept ringing the bell!!!!"
The way Kramer acts the whole thing out is hilarious!!!! I was rolling all over the floor with tears gushing outta my eyes cuz that was so funny!!!