Mudturtle 

1.) To mudturtle (or mudturtling) is a sex act in which someone goes down on a woman at the tail end of her period, when it's all brown. Derivation: the reptile, Mud Turtle, which lives alongside swamps and lakes.
2.) It can also refer to the final phase of a woman's period, in which the endometrium is drying up and brown.

1.) Man: Hey baby, mind if I go downtown?
Woman: If you don't mind mudturtling, I'm down.

The act is referenced in the comedy song "Mudturtle" by Purdy Hölsom.

2.) "My period is almost over; I'm mudturtling."

Mudturtle by candyandisaurus April 22, 2014

Choking a mud turtle 

Doing a strenuous shit.

1. Got to go and choke a mud turtle.

2. Mary's been in the toilet a while. She must be choking a mud turtle.

Choking a mud turtle by murtle the turtle August 22, 2006

Mud turtle 

Extremely large African female with attitude.

Big ole fukin mud turtle tried to pick a fight.

Mud turtle by Stefex13 July 28, 2012

mud turtle 

An unattractive woman.

I'd never go out with Mary. She's such a mud turtle.

mud turtle by Andrew Morse September 24, 2006

maturtle 

n. a mature person who acts immature. The person wears an immaturity shell to hide their true personality, either out of insecurity or detest of other mature persons. This immature shell protects the secretly mature person from responsibility and from the company of dull people.

Emily was shocked to discover that her boyfriend was intelligent and responsible, even though he acted foolish the majority of the time. It became apparent that under his jackass shell, he was a maturtle.

maturtle by Emigoodish July 1, 2011

mud turtle 

n. Derogatory term to describe African Americans

That goddamn mud turtle stole my television.

mud turtle by Ray Flynn May 13, 2005

mud-turtle 

girl you would hook up with drunk, but not sober.

Q: dude i was so hammered last night what happen?

A: Dude you hooked up with that mud-turtle with the acne all over her face.

mud-turtle by blacktony July 1, 2008