One time in fifth grade, I was walking back to class from the bathroom. Before I continue, I should specify two things.
1. My classroom was literally just around the corner from the bathroom, next to the lockers.
2. There was a boy that I had a crush on for the past year in my class.
Now for whatever reason, I was swinging my arms around in a wild half-windmill motion. Don't ask me why, I was just filled with child-like glee I guess. So there I was, swinging my arms dramatically, then just when I got to the corner...
SMACK.
I had accidentally slapped someone in the face. It took me a second to realize who it was: my crush.
I was mortified, but he just started laughing. To this day I can probably cite that as one of my top clumsy/socially inept moments.