Genetic Nerd Share definition Flag When 2 nerdy parents have kids, thus making them nerds, genetically speaking. Guy1: my parents both have PH. Ds!Guy2: HA! you're genetic nerd! trollface Genetic Nerd by ToxicWaster December 16, 2012 0 0 Get merch Get the Genetic Nerd mug. Buy Now — $32.95 See more merch