I found a pair of sunglasses the other day, and started carrying them around.
Today, someone was tripped, and he dropped everything he had, I stepped on his pencil case. He reacted by saying "You just my pencil case!"
This was a great opportunity. I took out my sunglasses.
"Looks like I..." I then unfolded them and put them on. "Cracked the case" I then walked away, and when I was out of sight, I yelled "YEEEEEEEEEEAAAAAAAAAHHHHHH"