Quote from Kramer in The Reverse Peephole
Kramer: Newman and I are reversing the peepholes on our door. So you can see in. Elaine: Why? Newman: To prevent an ambush. Kramer: Yeah, so now I can peek to see if anyone is waiting to jack me with a sock full of pennies. Jerry: But then anyone can just look in and see you. Kramer: Our policy is we're comfortable with our bodies. You know, if someone wants to help themselves to an eyeful, well, we say, enjoy the show.