Why Don't They Laugh??

isn't it sort of odd that these four extremely funny people, nearly constantly wisecracking, never laugh at each others comments.

i guess that is some type of a sit-com convention.

m.

Watch closer 'cause whenever Jerry mocks George Elaine almost always laughs with him. (poor George) Another thing to note is that whenever Jerry starts manhandling George in an episode he always starts to crack up.

George:Your sending me into no mans-land....and if I get shot down I'm going to have to come crawling back out here! Jerry:Alright soldier get a hold of yourself-....etc. (starts pushing him).....Get in there!