Oh dear!
I had a similar situation happen to me a few weeks ago...
I was at the in-laws and they asked me take a look at something with their pool equipment. While I was out there, I noticed I had a bit of a "bulge" in the bag. What I didn't know was that bulge peeking out over my belt line wasn't air!
So I sort-of mindlessly reached down and burped. You can imagine what "burped out"!
Next thing I knew it was a mad dash to the bathroom. "EXCUSE ME! GOT A BLOWOUT!" With a couple of people scratching their heads... "Um, what's a blowout?"
LOL!