When complaining to Stanky's sponsor, George claims that in Cub Scouts he was stuck at the Webelos rank for three years. At the time George would have been a Cub Scout (~1970), Webelos was the highest rank possible so he wouldn't have been stuck. George, however, is well-known to be a liar so it is also possible that he is making it all up.
Although Jerry's girlfriend goes about the apartment supposedly naked, you can clearly see that some type of white garment or undergarment is covering her breasts when she gets up from the table while they are playing Scrabble. Later, when Jerry brings out the belt sander and is supposed to be naked, you can see the top of the pants he is wearing.
When Peggy says she's going to get another bottle of water because Elaine touched it, Walter gives her his and says "there's a little left". She acts as if she finished it but you can clearly see the bottle is half full.
Peggy (Megan Cole) is presented as a germaphobe, but she's really only concerned about catching something from Elaine (Julia Louis-Dreyfus) because of her promiscuous lifestyle. If she was really a germaphobe she wouldn't drink from the bottled water Walter (Wayne Wilderson) had also had a drink from.
It seems out of character that a germaphobe such as Puddy (Patrick Warburton) would work as a mechanic with all the grease and oil.