Grandad Erector Share definition Flag A sight so sexually stimulatin that it could raise the dead. "Look at that stripper shooting ping-pong balls from her hairy scar, that is a grandad erector." Grandad Erector by Jtron 3000 October 3, 2003 0 0 Get merch Get the Grandad Erector mug. Buy Now — $32.95 See more merch