Top Definition
Engaging in consensually aggressive, uninhibited, or particularly enthusiastic intercourse. May also denote Sado-masochism or the Cowboy position.
"we were bucking like wild beasts all night."
by FUVM,The,FCC December 18, 2007
6 more definitions
Throwing up after consuming alcohol.
"I was trying to clean up her vomit while she was bucking in the toilet"
by Cratina February 17, 2006
Bucking-Kinda the same as curving someone, making someone else feel scared, or not wanting to do something G, or cool. Used in the south, watch out a lot of friends will say your bucking just because you don't want to do something they want!!!
boy 1: I don't want to fight you

boy 2: oh so you bucking

You would probably get respect if you didn't buck from every call out.

Whats sup, Im not bucking
by Ace man 101 May 27, 2011
to snort a line of cocaine or any substance up your nose.

"we were bucking coke last night"
"want to buck some K?"
"did you buck?"
by BARBER MAN October 25, 2006
to snort a line of cocaine or any substance up your nose.

"we were bucking coke last night"
"want to buck some K?"
"did you buck?"
by BARBER MAN October 25, 2006
Rogering someone that the Bucker considers to be a complete and utter bastard, usually anally and with an inanimate - or animate if the occasion calls for it - object.
Man 1: I've just had a thought. Let's buck Matthew Caris with a jar of marmalade.
Man 2: Yes, his crack is big enough! Let's go!
*Men walk to the Marmalade Shop*
by a psuedonym June 24, 2004
bucking = back fucking

basically, a guy rubs his hard cock on the groove on the back of a girl, right above her ass until he cums all over her back.
yeah man, me and julia were bucking last night. i jacked off my huge cock between that little groove in her back and came all over her back and her hott ass.
by jamesfuckerr December 10, 2007

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