What is Macmillan?
1.
The act of shoving your testicles into the anus of a girl you are having vaginal intercourse with in the missionary position.
May also include shoving your testicles into the vagina while having anal sex.
Akin to an "Armstrong".
"Dude, I was doing this chick and I totally MacMillan'd her. Right in the backseat of my Miata!"
See
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When the camera is placed above your head at an angle to take a myspace picture.
This is usually done by the horribly mangled, ugly, a..
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a band in an episode of south park that timmy joins and people get pissed cause he is handicapped
lords of the underworld are funny..
