Panillow Share definition Flag A panillow is a very comfortable penis which can be used to rest one's head as a substitute for a pillow. "Why are you laying on my crotch?" "Duh, isn't it obvious? You have a very soft panillow." Panillow by AD's A January 14, 2009 0 0 Get merch Get the Panillow mug. Buy Now — $32.95 See more merch