When a guy cums on a girl's back while she sleeps and then sticks a cape (blanket) on her back, thus making her superman. Men usually do this because they are pissed at the girl for some reason.

Used in the AIDS filled song of "Crank that Soulja Boy"
Dude, I totally supermanned my girlfriend last night because she wouldn't blow me.
by BobGre December 30, 2008
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Superman is a fictional character and the staple superhero of DC Comics. He first appeared in Action Comics #1 in 1938 and is considered the first character to embody the particular combination of traits that characterize the modern superhero.

The comic book character, created by Toronto-born Joe Shuster and Cleveland-born Jerry Siegel in 1932 and sold to Detective Comics, Inc (today DC Comics) in 1938, subsequently appeared in various radio serials, television programs, films, newspaper strips, and video games. As was written in the first edition of Action Comics #1 (June, 1938), Superman is born on the planet Krypton and as an infant is rocketed to Earth by his scientist father, moments before Krypton explodes. The rocket lands on Earth, where amiable couple the Kents find the baby and adopt him. As he grows, he discovers that he possesses powers far beyond those of mortal men and women and resolves to use them to help others. When not fighting the forces of evil as Superman, he lives among humanity as "mild-mannered" Clark Kent, a reporter for the Daily Star (later changed to the Daily Planet). Clark works alongside reporter Lois Lane, with whom he is romantically involved. In current comics continuity, they are married; however, the character has several other relationships throughout his years in comics. Today, the character's adventures are published in a number of comic books.
Superman is a great superhero of the DC Comics
by P.redeckis June 7, 2006
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The Superman is a sex position, where a guy has sexual intercourse with a girl, doggy style, and bends the girl forward while he reaches over her shoulders to plant his hands on the floor, supporting his weight, while his legs are sticking straight out. The posture has the man resembling a flying Superman.
The Superman position was out long before that Souljah boy garbage got everyone confused as to what it actually does mean to "Superman that ho".
by Wizard Toast October 3, 2010
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The Superman is an old trick performed to humiliate whatever skank or girlfriend you'd like to be rid of. You need some friends, a pillow case, and maybe some cameras for internet video production. After an evening of fun you wait until the mark is asleep and lying on her side. Take a pillow case, preferably red, and jerk off onto one end of it. Take the case and carefully hold it against her shoulders for a couple minutes until it's stuck good. Go out to the living room where your roommates/buddies are hanging out and set off the smoke alarm. Now yell very loudly "Fire!" and watch for the girl with the cape.
"I was done with that bitch and she wouldn't take the hint. Finally I gave her the Superman and sent the video to her parents."
by Cakehole1313 February 18, 2009
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the act of when your having sex, then as your about to cum, say "its a bird! no! its a plane! its superman!" as you run outside and spray the semen everywhere
the woman did not want to get pregnant so the man did a superman
by bjc2002 March 17, 2013
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The world's greatest superhero made into the world's worst video game!
Why make a game like Superman 64? IT SUUUUUUUUUUUUUUUUX!
by This Is A fuck win March 1, 2018
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The superman often occurs after a long night of partying when you stumble across a friend who is drunk on the floor layyed out with his arms in the super man position .

there is also the one handed superman.
"hey dude, wheres Adam ?. "
"oh hes out side passed out on the grass doing the superman"
by moenukka October 6, 2009
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