Crusty Muffin
When someone with a mustache (male or female), administers oral sex on a female and lets the vaginal fluids crustify onto the mustache.
"Jimbo grew a mustache in anticipation for his inaugural crusty muffin."
Crusty Muffin
To eat a girl out. As in oral sexual intercourse with a female. Commonly related to a "muff dive".
Matt:"Dude, I totally ate a crusty muffin last night!"
Kevin:"Really, was it warm, fresh and tasty? Did you spell out the alphabet??"
Kevin:"Really, was it warm, fresh and tasty? Did you spell out the alphabet??"
crusty blood muffin
When the anal cavity is penetrated with such viciousness that it pulls the rectal out; creating a hemroid that resembles the top of a muffin that is bloody and crusty with semen.
Mahyn, I just got the worst crusty blood muffin.