I thought it was some dumb attempt at thermal management like “oh when you paint roofs white it lowers electricity bills because the heat from the sun can’t go in as good so if I paint my laptop black it’ll be cooler because the heat from the inside will go out better, maybe”

Like just some real dumb shit like that, but nope, racism

Yeah, I def didn't get the racist joke until I read the clap back. Then I re-read the first tweet and was like "oh. Yep. Just straight racist."

Yeah this was me to. I was like what an idiot

Comeback as in "A retort or answer, particularly a quick or clever one."

https://en.wiktionary.org/wiki/comeback

Franklin's response is the 'comeback' in this case.

This complete misunderstanding of "comeback" was surprisingly humorous, thank you.