When a man or woman eats extremely spicy food then waits at least 2 hours (or until they really have to poop) then has their partner take a lo mein noodle and stick it through one nostril and bring it part way out the other so half is hanging out either side reassembling a Mongolian mustache. The partner then takes the noodle hanging from their nose and tickles the others asshole until they shit all over their face. They then let the shit dry and keep the noodle in their nose and wear this as face paint to a social gathering.
"Hey Thomas I really like your face paint you wore to my daughters birthday party!"

"Thanks, Kelly gave me a Mongolian facemask."
by DaxTheDestroyer April 8, 2016
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After you blow your load all over a girls face, you take a handfull of your pubes and throw it in her face creating a gorilla facemask!
Monica had a hard time picking the pubes off her face after Aaron gorilla facemasked her.
by inthegooch November 10, 2007
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Noun: the act of stretching the scrotum to cover the nose and mouth of an individual with the testes located above the person's mouth so that the person's face looks like an alien.
Courtany passed out last night on my couch so I covered her nose and mouth with my sack. It was the perfect alien facemask.
by Brad T. D. C. November 13, 2007
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When a woman takes vengence upon her lover by grabbing the sex towel and shoving it in her partners face thus making him smell and taste all the human sexual escrement from both parties. Usually the towel is held to the face until unconciousness.
"I tried to make my wife quefe last night, she crusty facemasked me to get me back. "

"That bitch."

"I totally crusty facemasked my husband last night. It was the only way I could get him off me. He still hasn't woken up yet."
by iactuallydidthis April 28, 2010
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A sexual act, in which the male prepares in advance by shaving off his pubic hair - keeping it in a location near by. At the conclusion of oral intercourse, the male ejects his load on the recipient's face. He then scrambles frantically for the pubic hair and then throws it on the recipient's semen covered face. The pubic hair will stick, resembling the famous Star Wars character Chewbacca, a Wookie. If able to, roar like a wookie as loud as possible.
Broguy, I totally gave her a Wookie FaceMask last night.

Together: *WOOKIE ROAR*
by d0ct0rfill December 22, 2017
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During sex, right before you cum, you pull out and bust on her pussy. Then the woman takes your head and shoves it in the cum, replicating a mask.
My girl was upset with me from the other night and gave me a Tennessee facemask.
by The 4 panis November 27, 2016
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When a man puts seran wrap on another person's (usually a woman)face and deficates all over it.
After a buffet meal, my girlfriend said she wanted to do something unusual, I suggested a tahitian facemask. Our relationship was never the same again, because she stunk
by Neil Cozzolino October 26, 2007
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