When a woman's inner vaginal lips are SO huge and hang down so low they can actually foldback and rest against the anus, hence giving them a "muddy" appreance.
Vicky dropped her drawers to reveal the nastiest set of Alabama mudflaps I have ever seen!!!! I think I vomited in my mouth a little!
A sexual act, in which a person begins to eat their significant others ass from behind. The receiving participant then sharts, leaving a spray of fecal matter on the other involved participants face, similar to mud speckled on a mud flap.
My boyfriend said he wanted to try something new in bed last night. I wasn’t even two minutes in, he sharts and redneck mudflapped my face.