After having sex with a woman (or man), in a bed, the penetrater stands up on the bed prior to climaxing and blows his load in the air (via bouncing), thereby producing a flying semen (spacemen).
Joey:"Yo Johnny, never guess what I did last night."

Bill:"My names Bill.."

Joey:"I did a spaceman to your mother."

Bill:"I don't even know what that is.."

Joey:"It's like when yo.."

Bill:"You're a tool. Shut up faggot."

Joey:"SAD FACE):"
by Smokey Osprey October 23, 2009
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Spaceman: That weird ass kid in your class who fucks wit hentai n shit and who puts on this air of sarcastic superiority to compensate for the fact that he knows no one likes him. He’s completely unaware of anybody’s feelings towards him, does weird shit to make himself look special in order to hopefully get others attention and he’s also unaware that by acting weirder he makes everyone dislike him more. This constant refusal to understand that no one likes him makes him a spaceman, an alien, not of this world.

For instance, Napoleon Dynamite is a spaceman.
-Eric presented his mylittlepony toys to class today.
-God! What a spaceman!
by Cup ‘a’ coffee July 21, 2019
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To invert somebody's backpack while they are unaware of what is happening. Done by taking somebody's back pack while they're not looking, taking out all the books and paper, inverting the backpack, and then reinserting anything that was taken out. The backpack is then placed back where they took it and by the time the person sees it again, everyone will burst out laughing.
I was talking to bob in class, and some asshole spacemanned me.
by Taran A October 9, 2009
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One of the best songs of the 90s by Babylon Zoo, used in a Levi's Advert and reached No.1 in 23 countries. Most people only know the main line of the song.
1.Spaceman I always wanted you to go into space man.
Intergalactic christ.

2. Remember 'Spaceman' from Babylon Zoo in the 90s. EPIC!
by Alistor December 15, 2008
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when you masturbate for so long the air accumulates from the front end to the back end, creating an ass blast so hard to go to space.
dude 1: dude i just spaceman'd last week so hard i didnt come back til today
dude 2: holy shit
by bigniknok June 22, 2019
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'That girlfriend of yours is a fucking schizo.'
'Cool it dude, you're starting to sound like the Spaceman.'
by MC Impious December 2, 2008
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When you wrap a plastic bag around a lover's head, tear a hole in the top, and vomit into it.
John: Boy, I really am bored.
Rob: I'm queasy after all this marker-huffing. Mind if i release my stomach onto you.
John: Only if you give me the airsick spaceman
by bobmek January 24, 2018
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