During anal intercourse, the male will remove his penis and reinsert it in the girl's vagina. The feces on his penis are transferred to the girls vagina creating a dirty muffin.
Last night, I was giving it to her in the ass, then before I blew my load I stuck it in her puss. By the time I was done she had one dirty muffin.
by Sammy Cayman July 24, 2005

jis, sperm, cum, skeet, & other substances that, when inserted into the female sexual organs, produce a whining brat.
by B. Z. September 11, 2005

by Professor Hyram Blitz May 21, 2006

by rachaelah February 13, 2007

When someone's drawers are so tight or too small that flab hangs out the bottom for all to see through a pair of pants.
Sherry's muffin bottoms was lookin mad crazy through those white pants...looked like blocks of cheese hangin from her trunk.
by CC Smith October 31, 2007

by Big Ezz August 25, 2005

Actually a Wank Muffin is an old term for a tasty female who gets you going so badly, you have to get a quick one off the wrist.
by stu August 1, 2003
