Oh you guys are so funny!! I loved all the stories...
The only one I can think of right now is I was walking down a hallway talking with someone and was looking at them as we walked. I ended up walking into a wall and stood there a moment dazed and said "excuse me."
My friend just about peed her pants. From her view she said I stood there a moment and looked at the wall and still said excuse me. So embarrassing.