Well, Kramer said that he had to shave there when he was a lifeguard, and Jerry looked so horrified. It seems that Jerry must've seen Kramer's chest hair often times, like at the gym and through low-cut shirts. Why would it make him cringe in fright that time? It does explain the big indiscrepancy.
in the episode where Kramer stored his own blood he said "Jerry - I know myself. If I'm out on the street and it's starts to go down, I don't back off until it's finished" but when the ambiguously gay duo took the armoire he almost cried. This seems like a character inconsistency.
Kramer seems to be a stickler for the rules while playing golf with Steve G. However, when he adopts a highway, he takes all the road signs home and doesn't mind having spray paint all over his Speed Limit 55 sign.
