comment roulette
It's the high risk game you play every time you read the comments on an online article/post/video etc. Sometimes they are clever and funny and at best, better than the article itself. Frequently though they make you concerned for the future of humanity and/or angry enough to want to find the commenter and slap them.
She realised she had once again lost the game of comment roulette when she read the words "evolution is just a theory"