EM ES Share definition Flag EM ES stands for m-s which stands for mouldy sandwhich. EM ES refers to a person who's odour is really REALLY and i mean REALLY bad to the lungs to the point of suicide. what the hell that guy stinks man, i hate him that EM ES fool... EM ES by l0rd h00d November 7, 2007 0 0 Get merch Get the EM ES mug. Buy Now — $32.95 See more merch