What's the funniest/ most embarrassing memory of yourself that you've never told anyone else?

Well, I can't say no one else knows about this, because a girl I was friends with was there. We were goofing around in a fast food restaurant parking lot and she was chasing me with a dirty chicken nugget, trying to throw it at me. I jumped over a guard rail, not knowing how steep a drop it was. I ended up tumbling down a steep embankment and right into a muddy pond!