Mudbutt is when an individual has long day of work and had taco Tuesday the night before so their stomach hurts all day and they periodically fart in their pants by the in of the day they have sked marks in your underwear.
Javier ate his famous enchiladas then he went to work the next morning in the hot texas sun next thing he knows it looks like dom from fast and furious did a burn out in his underwear. That is mudbutt
by Nigil yorkin August 9, 2020

During intercourse, when your spouse/partner poops while giving them anal, thus getting this all over their butt.
by MudButt Master March 18, 2017
