Turns out that these were plates from the buffet at the MSG after party. Jenny had taken a whole bunch of food from the buffet, put it between two glass plates, wrapped it in a napkin and put it in her purse. But the napkin had come undone...
Meredith, Leigh, Jenny and I all got into a cab and we headed just a couple blocks to where she told us her apartment was in the Lower East Side. We got out of the cab and walked to her front door. She got in front of her door and then exclaimed "Wait a minute! I don't LIVE HERE any more!" We all laughed. But then when Jenny couldn't remember where she'd since moved we realized that she was A LOT drunker than we'd originally estimated.