The courtesy honk you give a driver in front of you at a stoplight who isn't moving because he/she is distracted by texting or checking email
That guy isn't moving, give him a tonk; The jerk was checking his email so I tonked him to get him going; check out the tonker in front of us; you need to tonk him so we can get moving
by FenderBlender March 15, 2016

A particularly large tonk (vape) that is often passed around the toilets of a private school. some may say it is passed around more than Taylor swift? its name is Thomas due to the unfathomably large clouds it produces. it is usually able to hot box an entire bathroom within 3 chongs.
Simon chap can I Chong on Thomas the tonk engine - his clouds really are spectacular *teacher enters* " urm chaps, is that a Tonk Engine im seeing?" students would reply along the lines of "ah yes sir it is" and the teacher usually says something like " ooh thats dank bruv give us a couple pullies"
by FATCATHY February 26, 2023

Tight jean wearing red neck, specifically in reference to the hair pulling, ball shifting difficulties of wearing tight jeans for cowboy boot wearing hotties.
by FoxyFly January 7, 2018

by Dickfacethecuntjuggler May 30, 2021

Tonk is a synonym for the quite frequently used word Fjolnkskebab, and I am quite certain that we all know what Fjolnkskebab means. And if you don't, well, your just a little bit of a gross crusty child.
Jjereme- "Flurble combantso man TONK forle bankse,"
Humerskle- "Tonk? molfanda crendanksa bunky bunka!"
Humerskle spits on Jjereme
Humerskle- "Tonk? molfanda crendanksa bunky bunka!"
Humerskle spits on Jjereme
by Lewisnope June 14, 2021
