Facelagging
When some loser comments on a post from weeks ago, like they were hiding under a rock the whole time. They act like they just discovered the internet.
You post, 'I’m bored.' Two weeks later, someone comments, 'Me too!'
You post, 'Just got a promotion.' Three days later, your uncle comments, 'That’s cool!'
You post, 'Going to the mall.' A week later, your cousin comments, 'I was there!'