My cat loves to push, snuggle or whatever into my son's armpit. It doesn't matter if he just got out of the shower or not. We figure it must be a musk smell. Anyway, the other night he was letting her have her way when he started laughing. He said she was biting in that area. Then she fell asleep snuggled up to him and his underarm. I have never had a cat like an armpit. Our other cat (God rest his soul) loved to rub the top his head on my son's beard. He would let him do it until the saliva started flowing. Animals are funny, but then they probably think the same of us.