Nomgasmic. Share definition Flag Something that tastes so good it's like masmkdoadfja jizz in your pants. "OMG this ice cream is nomgasmic." "...Do you need to change your underwear?" "...Yes, yes i do." Nomgasmic. by IdrilAldarion. June 9, 2009 0 0 Get merch Get the Nomgasmic. mug. Buy Now — $32.95 See more merch