Top Definition
A penis that curves at least 90 degrees in on itself or has a noticeable 'kink' in the shaft.
Sally would not touch Ryan Bonner's twonky dick.
by Mr Belvidere June 20, 2011
Something unknown that can not be explained.

from movie: The Twonky (1953) United Artists
It's a twonky.
by IzzySerious May 09, 2016
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