Marouane Fellaini clearly wanted some of his iconic afro back during Wednesday night's game against Arsenal, and tried to yank Mattéo Guendouzi's hair from his head in a quite frankly appalling challenge from the Belgian.
It has since been revealed that no action has been taken against Fellaini for pulling Guendouzi's hair at Old Trafford last night because referee Andre Marriner gave a free-kick, thus the matter was closed.
But many believe the midfielder should have faced retrospective action for his actions against Unai Emery's side.
Robert Huth, on the other hand, had a simple message. Play on.
Back in 2016, the Leicester City defender was handed a three match ban for pulling Fellaini's hair in a game against Manchester United at Old Trafford.
The Belgian was also given a three match ban for elbowing the German centre-back, so does that mean hair pulling and elbowing are equal offences?
It is certainly a topic for debate, as Fellaini has since got away with hair pulling against Arsenal - while Huth was given a ban for the exact same offence two years previously.
Should Fellaini have received a ban for his hair pulling antics against Arsenal yesterday?
Let us know in the comments.