Thanks for the replys. It is somewhat comforting to know that it isn't an issue with only my TCH. I found it especially comical when my Beagal set it off yesterday. She's not that big!
I had thought that car manufacturers were not going to have a "seat belt buzzer" because too many people became annoyed when they went off. It stinks for me because I park in a garage for work and don't feel like buckling up for the ride down 7 floors only to have to unbuckle to get my walet out.