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.

Mercury retrograde is the act of taking a shit whilst mooning one or more human beings. Your day can typically being going well, according to your horoscope, until you are forced into witnessing Mercury retrograde. Performing Mercury retrograde will often speed the astrological cycle forward for the individual performing the Mercury retrograde, bringing about happy and fruitful times to come.

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.

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.