I knew someone called Bumhole because of his body odour problem.
My mate Luke was known as Wiggy because it was widely reckoned that all of his pubic hair fell out at an early age, and hence he had to wear a wig to cover his genital baldness... we had no actual evidence for it, but it was too good a nickname to waste.

My own nicknames have mainly been derivatives of my surname; Woody, Woodbine, and not least of all my current username, which is my house number combined with what my old physics teacher Mr. Feav used to call me... "Now then what's the answer, Woodside?" often derailed any train of thought which was running when I gazed out of the window in search of a distraction from optics or Fleming's rules or whatever he was going on about. (The answer? Erm... what was the question?) Also, I had quite an odd nickname during year 11, when we still had compulsory PE lessons; often, when I was changing, someone would shout out "Woody's got a boner!" and the chant would start. "Woody's got a BONer / Woody's got a BONer! / Woody's got a BONer!!" etc. It may have been for this reason that I was known that year as "The Man With The 40-Foot Golden Schlong".*

Oh, and speaking of bad taste, my dad was so skinny that he was known at school as "The White Biafran" (click here for explanation.)

* Before you ask - no, I never got it out in PE lessons. We don't do that sort of thing in state schools. Not in my experience anyway.
( The Mock TurtIe ™ --- Thinks you are a cunt, on, Fri 19 May 2006, 19:22, Reply)