Hah, well…
My fraternity had nicknames for every member. Though I used to have a temporary name because nobody actually caught me on anything, there was this one time I jumped out of bed and hit a wall.
I then proposed ‘Baf’ (because of the sound it made in Dutch, like bang). I was completely happy with it, but everybody gave me a weird look when I said it. All in all, it changed. A few weeks later one of the members walked into me and told me what baffen meant.
I should have know there was something wrong when everybody gave me that look.. Baffen involves licking, and an anus..
Took me three months to change my nickname again.