Hmmm, really dumb stuff I did...
*Decided I could pass Organic Chemistry without ever going to class...well I did pass, but a D wasn't exactly the grade I was going for!
*Got in a huge fight last year with someone who was one of my best friends, and things still aren't the same between us. The worst part is, I can't even remember what we were fighting about, but it was blown waaaay out of proportion.
*The weekend of the big ice storm last winter, driving 4 hours back to school because I had a test the next day and was soooo certain they wouldn't cancel class b/c my university NEVER cancels class. Guess what? They cancelled class.
And this was all my sophomore year of college...someone must have been repeatedly beating me with the stupid stick that year or something; I don't know what was going on in my head with all those stupid things.
I'm sure there's plenty of other dumb things I've done, but those are what I came up with off the top of my head.