When a man straddles a womans face while stretching his testicular sack skin as flat and as wide as possible. The man then proceeds to place the stretched skin over the womans nose and mouth only leaving her eyes to be seen. The womans eyes will enlarge as the amount of oxygen is cut off drastically. The Sack Mask should then be removed for a undetermined amount of time then repeated as needed.
Damn my balls hurts from giving that broad the Sack Mask all night!
by WithaG April 27, 2011
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During sex the male proceeds to orgasm on a womans face and then continues to place his sack on top of the face and rub the excriment around the facial region, thus creating a facial mask with his sack.
"Bro, did you sack mask that broad last night?"

"This girl asked me to sack mask her during sex"
by J-Rizzle & Swartsdog January 4, 2010
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verb, noun:
1. testes are placed upon the bridge of the nose so that bifurcation results in each testicle resting within each eye socket. The shaft of a (preferably) erect but acceptably flaccid penis rests upon the bridge of the nose of the recipient of the SSEM.

Note: Simply leaning backwards results in "The Unicorn Effect" in which the shaft rises upward while the testicles remain in the eye sockets.

Genital temperature should remain at a temperature of 37 degrees Celsius, which can be achieved in a warm water bath.
"While anticipating a tea-bag, I thought I went blind but discovered, to my relief, that I was recieving not a tea bag, but a Split Sack Eye-Mask."
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