Unfun with unfriends
As my grandma always told me: Don’t be a douche.
Sample:
We know you went to Michigan with Tom Brady. We know you were his tutor for freshman English. We know that without your help, he probably wouldn’t have passed. This does NOT give you the right to say “I taught him everything he knows” every time the guy throws a touchdown pass. Especially when the rest of us are rooting for the other team.

