thwap

intj

1. The sound of a heavy smack.

   “THE COMPLETELY MAD DON MARTIN, a two-volume honker that includes every drawing Martin ever published in the magazine, answers the question with a definitive thwap: Martin's cartoons are still weird.”

verb

1. To make, or cause to make, a heavy smacking sound.

   “Reflectors in the road thwapped beneath the tires, setting a regular, almost reassuring pace.”