Top Definition
the act of crushing (putting all your weight on) a woman's vagina during sexual intercourse (usually applicable to an obese male)
"So, Sheila...How was it last night?"
"It was so horrible, he was a total Muffin Crusher!!"
"Damn Girl! How's your Muffin' feel right now?"
"Totally Muffin Crushed"
by Poppadomman December 15, 2013
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