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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!"
by TroubledIndividual March 26, 2009
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Jun 22 Word of the Day
Taken in the contest of the song Baby's Got Back by Sir-Mix-Alot he is referring to Florence Griffith Joyner a track athlete in the 1988 Olympics who defiantly fits all the other descriptions of what he likes in women mentioned in that song. Not some soda why on earth would you want to keep your women like a soda anyway?
You can have them bimbos,
I'll keep my women like Flo Jo
by Pdough May 15, 2006
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