whack; lame; obserd; un-cool
"Shit son, that's bonk."
by wordson December 18, 2007

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Top Definition
The act of sexual intercourse.
I could do with a good bonk.

It's bonking time.
by Wez May 03, 2004

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The sound that "The Scout" character makes when hitting enemies with his aluminium baseball bat in the video game Team Fortress 2.
Who want's some a' this! BONK!
by Timic83 June 11, 2008

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Expression used by cyclists to describe excercise induced low blood sugar levels; being a feeling of light-headedness and weakness in all limbs. Similar to 'The Wall' in running. Has fallen out of usage in recent years due to alternative meanings.
I am feeling a bit light-headed, if I don't have a banana, I think I'm going to bonk.
I've got the bonk.
I bonked really badly and had to get a lift home.
by Comedy Dave June 05, 2004

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1)referance the act of sexual intercourse
2)to bump into or hit
3)old video game, featuring bald prehistoric boy, that killed enemies by head butting
1)I'm horny wanna bonk?
2)Can you go bonk the tv the reception is poor
3)Turbografix sucked except for Bonk
by Little j (of Flylife) August 22, 2002

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Sex with no strings attatched or a quicky with your partner.
Hey, fancy a quick bonk
by FishNeck May 29, 2008

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Descriptor for the act of bumping fists, usually performed in celebration.
Dude 1: "Dude, we were just chosen to judge a wet t-shirt contest."

Dude 2: "Bonks."
by George T Harrison July 10, 2008

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