What is your most embarrassing/funny moment?

I was at work once doing a job alone for my boss. Whenever I work I like to sing and dance a little, so long as no one is looking.. Well, I did this once and was jamming out to a song. I forget which one but I really got into it so I started beatboxing as well. About 5 minutes in I spin around to find my coworker/crush at the time blushing and trying her best not to laugh. I asked her how long she had been there and she told me a while..
I was pretty embarrassed.