old spaghetti Share definition Flag When a man's dick is old and flaccid, so it peels off in little spaghetti like pieces. Really a very nasty thing. "Hey,old chap. Looks like I've got me some old spaghetti." "Now isn't that terrible, my good sir!" old spaghetti by zxcboy888 December 6, 2012 0 0 Get merch Get the old spaghetti mug. Buy Now — $32.95 See more merch