a few options to chose from are here:
http://www.urbandictionary.com/define.php?term=TWONK
1. Derogitary term, roughly equivalent to idiot. More insulting than berk, but less insulting that gimp. Thought to originate in the Victorian Era meaning a lower-class foreigner
You twonks, why didn't you use the laser cannon on the Esperanto?
twerp berk twat git fool prat gimp
by Ythomit Sep 26, 2005 share this
2. twonk
Comes from the old school days of the 90s means a cross between a twat and a plonker.
I cant believe you just ate your own poo, you twonk.
twat plonker idiot retard stupid
by Lanksalot Sep 26, 2006
3. Twonk
A cross between a twat, plonker and wanker. Not used as a serious insult, more of a friendly, playful insult.