running blocker Share definition Flag when someone goes ahead of the drinking group to make sure there's no cops to hand out d.u.i.'s "haven't you guys had too much to drive?" "don't worry, aiden's running blocker today" running blocker by Sue Donham April 3, 2010 0 0 Get merch Get the running blocker mug. Buy Now — $32.95 See more merch
