facetiously derogatory
Making jokes about serious stuff like your mom’s divorce or your dad’s baldness. It’s like being a kid who laughs at the punchline of a joke that’s way too gross for their age.
Your teacher says, 'I can’t believe you failed the test, I thought you were smart.' You reply, 'Yeah, smart enough to fail.'
Your friend says, 'You look like a raccoon wearing a hat.'
Your boss says, 'Great job! You turned our project into a disaster.'