Chess. Not as drastic as damaging or ending a friendship but more like caused irritation.
My friend asked me if I was playing or not because I was reading the magazine beside me while it was his turn to move. So I said '' I do both because you take soooooo long in deciding what chess piece to move that I have already anticipated several possible moves of yours and several possible moves for me to make that I'm taking a break''.He got irritated lol