Grinfant Share definition Flag An infant that looks more like a small elderly person than an infant. GrandMa/Pa + Infant Guy 1: Did you see that baby? Guy 2: Yeah, the Grinfant? Guy 1: Looked like my Great GrandPa. Grinfant by Lumn April 20, 2008 0 0 Get merch Get the Grinfant mug. Buy Now — $32.95 See more merch
