When int feeding is not enough to troll the game, came to add as friend to continue insulting

Met this bard few days ago when he and his Draven kept intentional feeding since early game. He and his friend even goes as far trying added me as friend after the game to continue just to insult me. Today I kept receiving messages from this bard, I can roughly remember some his messages are: You are the absolutely the worst Ornn jg player i ever met in league. Smh. But when I remind him that I can post this on the forum, he got scared and quickly unfriend me. Jesus...this guy still having grudge on me when the game was already over few days ago.