Seems like RaR getting angry again and saying "im not mad, im laughing"
Best thing is
1) you say "brother are you japanese? Is english your 5th language" when it totally wasnt needed and the conversation could have stopped there
2) you say that you are starting to mess with them
3) you say "seth why are you so mad bro" "calm down man, just a game" which really seems like you are just trying to mess with them
really seems like you got played the entire time. He was pushing your buttons and getting you all upset and you reacted, exactly what he wanted.
verdict : Both are idiots