Pull a Beth

v. To shit in one's own bathtub, hot tub, or shower after falling asleep in it by accident. It is more or less a good thing, if you don't mind being known as that person who shat themselves in their own bathtub/hot tub/shower.

Last night I got drunk, passed out in the shower, and when I woke up, I saw that I had decided to pull a Beth in my sleep.

Luke? Isn't he that kid who pulled a Beth at the hot tub party?