A Rodent Nose
When your butt decides to let a little poop sneak out just to tease you while you're stuck in a situation with no toilet in sight.
At the movies, I had to hold it in during the whole movie. Then I let out a tiny poop during the credits. So embarrassing.
During a meeting, I felt my pants getting warm. I couldn't help it. My butt betrayed me.
I was waiting in line at the grocery store, and my butt let out a poop like it was a joke.