Mary'sJanus Share definition Flag That nasty new drug in the streets. It's fermented poo. Get high off of the fumes. Kid: Are you high or something? High Kid: yeah, i just took a huge hit of Mary'sJanus Mary'sJanus by rajula tamer January 2, 2008 0 0 Get merch Get the Mary'sJanus mug. Buy Now — $32.95 See more merch