nilf Share definition Flag Nerd I'd Like to Fuck. Nilfs are often extremely attractive human beings, often being known for having e.s.p., and also for just being better than everyone else. Yo playa, Julia and Cody sure are nilfs... shiiiittt just look at them!!! nilf by Nilf December 9, 2008 0 0 Get merch Get the nilf mug. Buy Now — $32.95 See more merch