The extra part of the boob that overhangs the seam of the bra cup when the cup is not big enough.
Allison thought muffin tops were for eating, or the bulge that overhangs pants or skirts, but she didn't know it's also where there's boobage overhang.

Her cup over flows.
by Rinne427 May 26, 2010
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A word used to described Fat People Who are desperately trying to escape from Themselves but decide to wear jeans while running. MUFFIN TOP
Lachie connor : The fattest known mammal to live on this planet of ours, he weighs 70 kg for a child with the intelligence of a grade 5. His flab tumbles like a tsunami if you slap it right. Muffin top
by Jai the almighty May 22, 2012
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When a man with a stretchy scrotum pulls it over his entire genetalia making a fleshy mound that resembles a muffin top (with hair).
Last night Jack did a muffin top in front of all the girls at the party and none of them talked to him for the rest of the night.
by Jay Gall February 14, 2006
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Well, everyone knows that the top of the muffin is the best, so if someone calls you a muffin top, it means you're the best!
"Oh my God! Look at that muffin top!"
"Why, I am honored!"
by roooood May 25, 2007
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