One of my good friends was married last night and the reception was at a Moose Lodge in a somewhat rural part of Indiana. So we are all sitting at our tables just eating our food when we notice a man dressed as a Smurf walking through the reception. He is shirtless, painted completely blue, with the white hat and red pants.
So he walks around the room for a bit, walks to the gift table, which we were sitting near, and says "This isn't a birthday party." Dude was totally at the wrong place, dressed as a Smurf...at a wedding!!!
So he realized what happened and hightailed it for the exit...but added on the way out "Well now I look like a dumbass". You think? It was classic and luckily I know my friend is someone who will laugh about it.