Top Definition
Derivative of 'thinking'. Used to describe two or more intellectuals engaging in sexual activities together.
Did you see that crazy drawing that's been going around of Ayn Rand and Sigmund Freud thonking? I think it broke my brain.

It being Ancient Greece and all, do you think Socrates and Plato ever thonked?
by superfreak2 December 08, 2014
this word was invented when one day a.j. collins was talking with me and amy gleeson on msn. he said he was thonking about something. so i said it should be used as a word for people that are supposedly thinking when we know they really dont think at all.
what was i thinking?!
you werent, you were thonking.
by caitlin September 01, 2004
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