Top Definition
A term for oral sex that is generally more acceptable in polite conversation than skull fucking

Derived from a typo of facebook
"I was facebonking when her Father walked in."

After facebonking each other for a while, Jennie and Tom decided it was time to change their relationship status.
by Rainbulimic July 10, 2008
1 more definition
A common misspelling of Facebook. It occured to me that this is a effin' funny word and obviously a reference to being shagged in the face whilst giving oral
"I want to Facebonk your face"

"She was rubbish at head so i just Facebonked her"
by Sneeky Dave again September 29, 2009

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