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1. The act of bending over, pulling down one's pants and showing an innocent person one's ass.

2. A person who *is* an ass. When in situations where the word a$$ is verboten (eating dinner with older relatives, giving a speech in English class at school, or talking on radio or tv), the word "moon" is an acceptable substitute for "ass".
"OMG, that hottie just mooned us! I'm so stoked"

<insert name here> is acting like a spoiled little girl. He's such a moon!
by Von Man February 05, 2010
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How everything is spelled, acording to Tom Cullen. From the book The Stand by Stephen King.
" Everybody's… always talkin' about what a dull town this is, since the roller rink went bust. And there's just the drive-in theater out on Route 61, and… all they show is them diddly-daddly pictures, and they're all rated "X". M-O-O-N, that spells "X". "

All right, I'm ready! Laws, yes! M-O-O-N, that spells "ready"!

Decoration is my hobby. M-O-O-N, that spells "hobby".

Julie Lawry: You're name's Tom, right?
Tom Cullen: Tom Cullen. M-O-O-N, that spells "Tom Cullen".

Ralph Bretner: Name's Ralph Bretner.
Tom Cullen: I'm Tom Cullen. M-O-O-N, that spells "Tom Cullen". I don't know his name, 'cause I can't read it. Sure wish I did, though β€” laws, yes.
Nick hands Ralph a hastily scribbled note.
Ralph Bretner: Your friend's name here is "Nick Andros". M-O-O-N, I-I guess that spells "Nick".

Woo-hoo! M-O-O-N, that spells "Nebraska"!

I got it, Mister! I got it! You're just like old Albion Packalot's hired man! Tom Cullen knows what that is! M-O-O-O-N, that spells "deaf and dumb"!
by Nottobrite September 26, 2005
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The Moon is Earth's only natural satellite. It is one of the largest natural satellites in the Solar System, and, among planetary satellites, the largest relative to the size of the planet it orbits (its primary). It is the second-densest satellite among those whose densities are known (after Jupiter's satellite Io).

The Moon is thought to have formed approximately 4.5 billion years ago, not long after Earth. There are several hypotheses for its origin; the most widely accepted explanation is that the Moon formed from the debris left over after a giant impact between Earth and a Mars-sized body called Theia.

Basically, nothing to do with an asshole. Stop that shit.
Normal person: "Oh, look. The moon."
Normal person: "some boring shit in response to this, involving derogatory and demeaning words, particularly of long length to convince people that they're smart"
by I Hate This Fucking Website December 07, 2015
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A thing that has been blown up at least 200 times in the DragonBall series. Believed to have revolved around the earth prior to its destruction(s).
DragonBall dude: omgwtf is that the moon?


DragonBall dude 2: where?
by Shin Tsubasa April 18, 2009
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1. the buttocks

2. to display one's nude buttocks
Jim got sent to the principal's office for mooning in school today.
by Light Joker December 14, 2004
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the act of showing ones naked ass for pleasure or any other stupid reason. usually done by fucktards and other equally stupid persons.

also is the big round bright thing you see on the skies at night. also a name.
When you weren't looking, the faggot pulled down her pants, bent over, and mooned you.
by Your local Blasian February 15, 2009
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