ShagWagon Share definition Flag 1. A car that you have intercourse in. 2. A really cool kid with the last name "Abshagen" 1.Dude check out my ShagWagon! 2. Hey man, you know that kid Ryan? His nickname is "ShagWagon" ShagWagon by Shagwagon June 25, 2008 0 0 Get merch Get the ShagWagon mug. Buy Now — $32.95 See more merch