Taunting is pretty bad sportsmanship tbh
So, i was playing jungle reksai and at level 1 he invaded my blue buff, also i saw he was taking my blue buff mid-game and i smited it and stole it, not knowing that the enemy player was coming to help nocturne. I died, and then this nocturne literally bm'ed us the rest of the game. At the end of the game, he typed in chat gg ez, soooo ezzzzzzzzzzzzz ty for the free win rek, and the blue buff and kill at the start.. and the worst part is they say you are mad, when you really arent.
Taunting is definitely very annoying, especially when YOU are on the losing side.
Btw, I honestly wasn't raging or anything, i just ignored him and said k.