Well, 190 actually has an official policy of nicknaming team members. Every Saturday night during the build season, and after every competition, we play a rousing game of
Crud. However, everyone playing must be called by their "Crud name," instead of their real name. If someone present doesn't have a Crud name, a quorum of the named players will come up with one for them (although the final decision rests with the one we call Black Hole).
Crud names traditionally are no more than two syllables long, are somewhat demeaning, and have some connection to a person's personality, appearance, or past behavior. For example, my Crud name is "Luzer." I'll leave it up to the other members of 190 who post here to reveal theirs.
My old team (992) had nicknames as well that went on the back of our t-shirts, but they were an optional thing (although a majority of the team did chose to have a nickname).