(1)Used when showing an extreme amount of disgust; or disliking about something.
(2)Used when showing a large amount of pleasure or happiness in a certain instance. Also, can be used as a variant to the word "hype".
This word is meant to be reserved for only the situations that involve your highest levels of emotion.
1.(You just found out that your girlfriend slept with your best friend)"That shit is bonko!"

2.(Your friend asks you how having sex with the hot girl you met at the bar the night before was)"That shit was bonko!"
by in4parbrad February 1, 2008
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(1)Used when showing an extreme amount of disgust; or disliking about something.
(2)Used when showing a large amount of pleasure or happiness in a certain instance. Also, can be used as a variant to the word "hype".
This word is meant to be reserved for only the situations that involve your highest levels of emotion.
1.(You just found out that your girlfriend slept with your best friend)"That shit is bonko!"

2.(Your friend asks you how having sex with the hot girl you met at the bar the night before was)"That shit was bonko!"
by andTHATSreal January 27, 2008
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Evan's 70's porn star alias.

Famous Catch Phrase: Honk Honk! BOOOOING!
Who was the greatest porn star of the 70's?
Evan?
Thats correct, I also would have accepted Bonko.
by BBBBB12345 October 30, 2006
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Greatest of all 70's Porno star,living in quiet retirement; enjoys playing OFP obssessively, is part of greatest OFP squad SWAF
by Bonko July 12, 2003
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The state a child or young person adopts upon receiving extraordinary news or is simply elated.
She received news that her best friend was going to be in town for the whole week and without warning just went coo coo bonko but that was to be expected from an 8 year old...
by Jamfetto December 22, 2008
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