when your having anal sex and your partner starts deficating on your dick. You pull out and run to the bathroom to wash it off and you run into the closed door and smash your dick smearing the poop all over the door making it look like a smashed burrito.
Boss: "Good morning John, how was your night?"
John: "OH man, you wouldn't believe it. Last nite me and my wife were having butt sex and I ended up getting a smashed burrito"
Boss: "Sorry, John. Times are tough"