What is Muffin Stuffer?
1.
Plowing or Piledriving a girl that is a little on the chubby side.
When she puts on jeans some fat from her waist goes over the top of the pants making her look like a "Muffin". So when you plow this girl you are hence a "Muffin Stuffer!"
See
Random Words:
1.
a male equivalent of camel toe. Occurs when a man's pants are so tight, the outline of his scrotum can be seen, resembling the app..