A man posted a racist meme about immigrants on his Facebook page, starting a grotesque conversation in the comments thread (how does that always happen?) about how horrible immigrants are for the country. Then, the original poster's mom chimed in with a revelation that she had been saving his whole life. It resulted in one of the best moments of Internet comeuppance we've ever seen.* She probably hadn't been saving it for a moment like this one, but it couldn't possibly have been better timed. See for yourself:

Sources: LADbible