A term that can be used to replace any profanity in a cheerful yet meaningful manner, it is mostly appropriate when a profanity must be shouted. It is also often used when everything is going against you but you simply don't give a shit and is in this case expressed in the song; 'cunt and onion, cunt and onion, tra la la la la'
playing FIFA and someone scores against you:

'oh cunt and onion!'

or

Your life's going to shit, the wife has left and you lost your job

'cunt and onion, cunt and onion, tra la la la la'
by cuntandonionfc November 20, 2013
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When a woman's pussy smells so dreadfully stanky like 1000 rotten onions.
I went to take a piss after Shannon used the toilet and almost passed out from the stench of her Onion Cunt.
by Big Polla December 28, 2017
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