Source : Free On-Line Dictionary of Computing

boink
     
        /boynk/ [{Usenet}: variously ascribed to the TV series
        "Cheers" "Moonlighting", and "Soap"] 1. To have sex with;
        compare {bounce}. (This is mainstream slang.) In Commonwealth
        hackish the variant "bonk" is more common.
     
        2. After the original Peter Korn "Boinkon" {Usenet} parties,
        used for almost any net social gathering, e.g. Miniboink, a
        small boink held by Nancy Gillett in 1988; Minniboink, a
        Boinkcon in Minnesota in 1989; Humpdayboinks, Wednesday
        get-togethers held in the San Francisco Bay Area.
     
        Compare {@-party}.
     
        3. Variant of "bonk"; see {bonk/oif}.
     
        [{Jargon File}]