How funny that what some of us think is cute grosses the rest of us out! I found my old teeth when my mum was having a clear out and it made me feel a bit sick!
The grossest thing I have heard (in a stalkerish creepy way) was when a friend told me that she had kept one of her boyfriends pubic hairs that she had found in her bed. Even after they broke up she kept it. I was literally lost for words. I think that is one that we will all agree is totally vile LOL.