Bananas, nuts, crazy, wild, ballistic, cuckoo! Any thesaurus will do.
Quite commonly used word, not slang, used to affectionately describe a state of mind such as the above.
Hand-in-hand vocabulary with for example: gor-blimey, bastards!, bollockchops, well I'll be a pissed on candle, crikey, shove it up your arse, and bollocks! Used in the UK at least.(>London<)
Humorous sub-text in use due to its (click the link) 'bonk' attribute, as in copulation of the 'Carry On' sort also bonk could be a hit, say on the head that has comedy value.
To enhance, say: 'bloody bonkers' or 'blimmin bonkers' or 'bloomin bonkers' or 'absolutely bonkers' (esp.)
-He's definitely gone bonkers, that boy.' (crazy in the head)

-They told me they lost the paperwork.
-Did you get mad?'
-I went absolutely bonkers (mad at them)

-I could have sworn I left it here on the frigde, I tell you I'm going bonkers

by Ja-' Chri-' UK April 27, 2006
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tiddiessss
wow she has big bonkers

omg dude why are u looking at her bonkers
by luigigotbigtiddies November 21, 2018
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meaning of bonkers is going Mad or Nuts..
First Person:hey man see hows she dancing?
Other Person:eh!i think shes going Nuts.
by V. Sarpal May 17, 2005
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Happy Hardcore/Hardcore compliation CD. Currently on its 11th incarnation, features DJ's such as Scott Brown (god) Hixxy, Sharky, Dougal.
have u heard that new bonkers CD? its amaaaaaaaaaaaaaazing
by hardcoretilidie February 25, 2004
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