The sound made when you receive head. This term is used by men to talk with their friends about hookups so the girls wont understand.
by Chase Redden January 13, 2008

Darren: Oh my god, did you see that boy that just walked past?
Kevin: Absolutely adorable!
Darren: He's not a twink though...
Kevin: He's a thwonk, and that's better.
Kevin: Absolutely adorable!
Darren: He's not a twink though...
Kevin: He's a thwonk, and that's better.
by crumpeteer01 October 30, 2022
