Butter her muffin:Have sex with her

From a classic line from the movie "Weird Science". Douchebag Chet (Bill Paxton) checks out crazy hot Lisa (Kelly LeBrock) and says he'd like to "Butter her muffin". This refers to finding her sexually attractive and the desire to have sexual intercourse with her. Lisa then transforms Chet into a pus spewing massive turd-like creature. One of the greatest comeuppances that ever comeuppanced.
Erik: Man, Kristjana is smokin' hot
Matt: She's not bad.
Erik: Are you kidding!?!?! I've give my left nut to butter her muffin!
by Gmonnaie August 8, 2008
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To no longer be a virgin. Mentioned in Mean Girls by Jason
I buttered her muffin yeaterday and she got AIDS (oops!)
IS your muffin buttered? Would you like us to assign someone to butter your muffin?
by B. P. June 5, 2007
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To place half a stick of butter in a girl's vagina, wait till it gets all melty, then eat her out and suck out all the butter. The the muffin butterer gives the lucky lady a rimjob and spits the butter into her anus, which is used as lubricant for buttery butt sex.
He decided to butter her muffin in home ec. because they ran out of flour and couldn't make cookies.
by SPEDcial Forces May 20, 2008
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To stuff her girl's vagina with half a stick of butter. Then let the body heat melt melt for 3 and half minutes. After this begin to eat her out and suck out the melted butter.

When your mouth is filled with butter (and maby cum...or blood if it's her period), oper her bum up a bit with your fingers and begin to give the lucky lady a rimjob, and slowely let the melted butter in your mouth drip down into her hole of darkness. This will provide proper lubrication for the next step, which is to stick your penis into her ass...
"My sister tried baking cookies with this guy, but he forgot to bring every thing aside from the butter, so he buttered her muffin, and then when I gave him a blowjob afterwards it tasted like butter and farts."

"In home ec. ...my friend... let the teacher butter her muffin so I...I mean my friend... wouldn't fail, but I'm worried because the class thinks my friend has a wierd rash on my- err...her... vagina, but it was just an alergic reaction to the butter." ~Me talking about my friend, who is so totally not me.
by SPEDcial Forces May 20, 2008
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Typically for women with a muffin top. To ejaculate on a women's stomach after pulling out and spread it with your dick, like spreading butter on a muffin.
I don't want to get her pregnant so I'll butter her muffin instead. She might even suck me off after.
by dangodame May 21, 2019
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