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A drug used to get high or "go bonkers". Bonk comes in may different forms including: pills, drinks, and tea. The original form of bonk is a brown plant that looks similar to tobacco. Some effects include feeling euphoric and going absolutely bonkers.
" Hey bro, you tryna bonk later?"

"Dude, i just bonked in the bathroom, i'm too bonkers."
"I was bonking my bonk, want some?"
by Frickenchimken April 26, 2019
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2
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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5
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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