daffy, not that you're waiting for my or anyone else's approval I'm sure, but just so you know there are some of us blokes out there who LOVE small boobs. But yeah, I've heard women being teased about it.
A lot of people will find something to thoughtlessly tease someone else about, and when it's a sensitive person who's having their confidence chipped away by it, bit by bit, it can lead to tragic actions. But to repeat, anyone can do this to anyone, and the idea that women are somehow the prime offenders is very misleading.