The internet has given a voice to millions of people who would have previously remained publicly silent, and unfortunately that means those people regularly post dumb things. But since freedom of speech is ultimately a good thing, our only way of fighting back is hitting those posters with the old fashioned "one-two punch" of hot-burning clapback. 

Elon Musk is a prime target for such clapbacks, as his public persona, ownership of a major social media platform, and propensity towards tweeting many questionable things all align for a perfect storm of opportunity. Everyone wants a chance to virally burn Elon for themselves, and everyone tries. The approximate halving of Twitter's value after he acquired it is always fair game. 

See tweets on that, and other sick burns in this collection of comebacks that hit extra hard.