Coworker showed us a pic on her phone of a Christmas ornament given to her by her late Grandmother. All one guy could offer was how the tree looked burned.
Another coworker was on poster to play in a band for a charity event and the same guy just made fun of how another guy looked.
The guy intentionally miss hears something just so he can substitute it with a word or phrase only he finds amusing.
What's the single word or phrase for someone who acts like this guy does?