Jon Allen Share definition Flag Getting killed in a First Person Shooter, by a cross map grenade, or throwing knife, etc. More often than not thrown on a whim. Lots of luck involved. -What The Fuck? where did that grenade come from? -Ha, dude, you just got Jon Allen'd. Jon Allen by Juamond April 4, 2011 0 0 Get merch Get the Jon Allen mug. Buy Now — $32.95 See more merch