A McDonald’s cashier is caught on a horrific cell phone video using a metal rod to brutally beat two female customers who’d jumped the counter of his West 3rd Street restaurant early Thursday during a fight over their order. The cashier, who police said had previously served a decade for manslaughter, beat the women so badly that one suffered a fractured skull and broken arm in the shocking attack, which was captured on a customer’s cell phone and then posted to YouTube. Police have charged the cashier, identified as Rayon McIntosh, 31, with felony assault, along with criminal possession of a weapon. Both women were charged with menacing, trespass and disorderly conduct. McIntosh is being held at the Manhattan Detention Complex on $40000 bail, according to the Department of Correction website