x-men piss Share definition Flag the x-men piss is when two people urinate into a toilet and make an x shaped stream with their urine gerald and jacob went to the toilet to have an x-men piss it was a great experience. x-men piss by bbqchip_sarah March 5, 2021 0 0 Get merch Get the x-men piss mug. Buy Now — $32.95 See more merch