Nemo Arm Share definition Flag When you are kissing your gilfriend/boyfriend while lying down, and one arm is trapped between you, getting in the way and flapping about a bit. Girl: Can we change position? I've got Nemo arm.Boy: Yeah it's really annoying! Nemo Arm by s-lar December 30, 2010 0 0 Get merch Get the Nemo Arm mug. Buy Now — $32.95 See more merch