Episode 1 quote that got me thinking

In episode 1, Jerry says to Kramer ''you haven't been out of the building in 10 years'' when Kramer says that he ''almost went to that [Mets] game''. Do you think this was actually the case? Kramer was on strike for so long from H&H bagels, so it wasn't like he needed to go anywhere (but how did he afford his rent??).

Kramer was a mysterious case lmao.

Thoughts?