The act of producing urine and/or feces inside of a public dressing room.
"I stopped thrifting with Robert after he got us kicked out of Savers for performing a dressing room boom boom."
rhetorical question designed to highlight the subject's idiocy, to the point that it's a marvel they are able to even do basic things like dress themselves
person 1: doesn't chocolate milk come from brown cows?
person 2: how do you dress yourself in the morning?