Definition of "boink"

boink

/bɔɪŋk/

verb
third-person singular simple present boinks, present participle boinking, simple past and past participle boinked
1. (transitive, intransitive, informal) To have sexual intercourse (with); to bonk.
  Quotations
  Think he's boinking her?
  1997, Tim Burns, Tom Stern, An American Werewolf in Paris, spoken by Brad (Vince Vieluf)
  Yeah, but you gotta have stories. I mean, I've had my share of losers, but you… you boinked the undead.
  1998, Doug Petrie, “Revelations”, in Buffy the Vampire Slayer, season 3, episode 7, spoken by Faith (Eliza Dushku)
2. (transitive, informal) To hit or strike.
noun
plural boinks
1. (computing, slang) A real-world social gathering of computer users.
2. (informal) Sexual intercourse.
3. A sound of something hitting or bouncing off a surface, similar to plunk, but with more connotations of bounciness.