A man stands on the edge of a 12 story building and jacks off over the side. His partner, preferably a woman, attempts to catch his spooge in her mouth.
"I tried giving my wife a 12 story face fuck but my load missed her face and landed on the sidewalk. Some ants ate it."
The more vulgar and descriptive way to say "screw this!" Also may be used when having a complete nervous breakdown and have lost all sanity and control over yourself.