WWE Superstar Sheamus and UFC fighter Conor McGregor have been going back and forth in a Twitter war which started with Sports Illustrated’s Twitter asking who would win a fight between the two.

Sheamus responded to the Twitter feed writing, “Ok @SINowLIVE @UFC @TheNotoriousMMA, Conor wins. I don’t hit featherweights or shoeshine boys. Mouth off to @BrockLesnar fella, I’m injured”.

Known for being vocal and well-loved by UFC fans worldwide, McGregor responded with the following, “@WWESheamus, @BrockLesnar fought PURE, phoney. Me and Brock vs. You and any shmuck of your choice. #CelticPhoney #TagTeam @JRsBBQ @WWE @UFC”. Sheamus then responded to that comment with the following, “Had bigger dumps after a salad @TheNotoriousMMA lad. U can hold @BrockLesnar’s @WWE title while the big boys duke-it-out. Win @UFC title 1st”.