Mud fin is when someone passes gas, emitting some fecal matter that gets flattened out between their butt cheeks, poking out of the crack like a shark fin.
by Lazy Reggie July 06, 2013
Person 1: Why are you ordering extra hot tacos tonight?
Person 2: It's the key to unleashing a 50 caliber mud rinse
Person 2: It's the key to unleashing a 50 caliber mud rinse
by MattyPotter November 22, 2018
by Mi_Rooster December 20, 2016
Dating a cop that has such bad breath and a rancid baby exit that you choose door number 3 to save your sheets.
I once dated a girl next to Kansas City that I had to do the Missouri Murry Mud Run on or risk having to buy new sheets.
by Fake Valor March 18, 2022
Darryl drives an electric car. He loves it when his girlfriend sticks one finger up his butthole while kissing him ever so tenderly, and then finishes by giving him a mud moustache.
by Corn & Rye November 15, 2022
The inability to speculate what it was you ate from looking at the newly laid poop in the toilet bowl.
After the boys went barhopping together last night, John knew he had eaten something off the sports bar menu but couldn't tell what that was from his pluff mud he just dropped at the gas station on the way into work the next day.
by Turkeybutt1 August 10, 2023