I was in a drama class the last two years as an elective, and I was cast in Othello as the roll of Iago once, just for fun in my 7th grade class.
Uh, I'm mostly just improv. though. Always trying to find something random and funny just to throw in during the middle of a skit is always interesting...
I'll never forget one time when we did something my teacher called "House Party," where several students from the class were chosen to play various roles while while the "Host" stepped outside. The object of your role was to play it well enough for the host to actually guess what you're supposed to be.
There was one day I was messing around in class with some friends, and having noticed that I was completely uninterested, the drama tteacher told me to pick an act to play out. Not knowing what to do, I quiclkly thought of the first role that popped into my mind...
From then on, I was the Metalhead Power Ranger, Uh...That wasn't who I was trying to be, but since that was the first guess I just played along, and made that my part xD