thunkest Share definition Flag A person who is the best at the act of spontaneously putting your thumb in someone's butt. The word comes from the sound it makes when inserted. He was the thunkest out of everyone. When the unsuspecting girl bent over he thunked her. thunkest by Arpho January 2, 2025 0 0 Get merch Get the thunkest mug. Buy Now — $32.95 See more merch