muddy lobster 

Inserting fingers into a partners anus and pinching.

Last nigh I stuck my fingers in Jill's ass and did the muddy lobster

muddy lobster by Muddy Lobster August 8, 2014

Muddy Mississippi 

Where you willingly sit down and let someone shit on your head and let the shit gradually role down.

Last night I got a muddy Mississippi and my hair has never been the same

Muddy Mississippi by Adam c January 9, 2015

Muddy Trench 

Slang for female human reproductive organs specifically the vaginal canal.

I got nice and sloppy all up in that muddy trench.

Muddy Trench by chzmn January 8, 2016

Mundelein Masher 

When a guy puts calamari rings on his thing and proceeds in moist coitus with his lady friend.

Yeah, Tyrone gave me the Mundelein Masher last night and I was all about it!

Mundelein Masher by moremonstermash June 3, 2016

muddy Texas winged prodding 

dress up like batman with a utility belt, a cattle prod, a spray can and a gun and run around at night and when you see someone shit on him or her then spray them with your spray can and start beating them senseless then zap them with your cattle prod and then murder them with your gun.

Batman: hey robin wanna do some late night muddy Texas winged prodding?

Robin: fuck you and your BDSM fetishes.

muddy Texas winged prodding by weedhead11111111111111111 April 17, 2018

Mundane Rule

The "Mundane Rule", proposed by Matt Jarbo (Mundane Matt) is the rule that any time a meme becomes popular it will be declared "ist" (Racist/Sexist)

So Sweeden just enacted the Mundane Rule over the Distracted Boyfriend meme

Mundane Rule by Skua September September 26, 2018

Muddy marsh 

Involves a human tongue, at least two fingers, a bearded trapper and some hand goop.

I still feel squishy after that round of muddy marsh.

Muddy marsh by mhpbutnot November 30, 2018