To place male genitals over the eyes of a sleeping person, whereas the penis lays along the bridge of the nose.
Ha, did you see the picture of Cindy getting The Groucho Marx?
Dumb bitch should not have fallen asleep at the party.
by Lord Gekko May 8, 2008
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When a man or woman who are usually kept and well groomed suddenly goes on hiatus of personal appearance. The phrase itself comes from the Groucho Marx who infamously sported huge untamed eyebrows.

For men going with groucho is usually growing a beard, seize of all manscapping, and a newfound lingering odor.

For women its usually the stopping of any eyebrow plucking, leg shaving, waxing, makeup wearing, or hair brushing.
Person 1: "What's been up with Anna lately? She used to be so hot."

Person 2: "Yeah man I guess she joined some feminist group and ever since she's been going with groucho."
by bangbang973 December 14, 2010
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Occurs when you are getting oral sex and your own pubes make it appear as though the "giver" has a mustache.
It was hard for Hans to not laugh as Wendy kept busting the Groucho Marx out.
by aggrobot October 18, 2006
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Similar to Persian sunglasses. The act involves waiting until someone has fallen asleep (usu. through intoxication) Then, in order to perform the act, another person positions themselves above the sleeping party, and dropping their testicles over the sleepers eyes, with their penis laying down over the nose. Therefore resembling the iconic "Groucho Marx" disguise.
Conor: I heard Pete was tellin' everyone about that thing.

James: Yeah.

Conor: So I went one step further; and gave him a Persian Groucho, when he fell asleep.
by Gazuba January 24, 2010
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A sexual act where a male ejaculates on or across the mustache of another male or rather manly female. The term derives from the mustache of the famous comedian, Groucho Marx, and the inherently sloppy nature of the action itself.
"Yeah dude, I totally gave that dude a sloppy groucho."

"You want it, don't you? You want that sloppy groucho. Oh yeah, beg for it, bitch!"
by Joe Brown Superman February 4, 2009
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This is basically a combination of the Dirty Sanchez and Snorkel Gear, nuff said.
I gave that bitch the ol' Groucho Marx.
by Drizah November 1, 2007
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