spot-welded Share definition Flag Post-coital syndrome, occuring when one's penis becomes stuck to the sheet, do to drying semen. "If you don't get up and wash your wanker, it's gonna get spot-welded" she warned. spot-welded by GewehrWolf April 10, 2007 0 0 Get merch Get the spot-welded mug. Buy Now — $32.95 See more merch