face-dusting
Face-dusting is like throwing a punch in the face of your friend's online life. You say something stupid and then act like you didn't just make them feel like a punchline.
Your friend posted a rant about work. You reply, 'You sound like a tired potato.'
Your friend posted a photo of their new car. You comment, 'That car looks like it was stolen from a junkyard.'
Your friend posted a video of their dance moves. You say, 'That's not dancing, that's a war cry for a chicken.'