clapback

noun

1. (countable, uncountable)An exercise where the pupil is instructed to repeat a previously played rhythm by clapping.
2. (countable, informal)A witty or sarcastic retort.

   “While these bits of online affirmation are addicting, so too are the online takedowns, the clapbacks, the snark.”

   ““My first truly viral video was a clapback to a nasty comment someone made about me being a stupid millennial and telling me to ‘go eat toast’,” Kung recalls.”