jam supper Share definition Flag performing cunnilinctus on a menstruating woman. (see also fish supper, diving into the red sea, rainbow necker). Alec promised June a jam supper, but only if she took out her fanny haddock first. jam supper by Dunky Oggins November 30, 2003 0 0 Get merch Get the jam supper mug. Buy Now — $32.95 See more merch