dirty spaghetti Share definition Flag When a male defecates in a female's hair and proceeds to have intercourse with feces coated hair. That girl will let you do anything to her. Last weekend she let Dave give her dirty spaghetti! dirty spaghetti by Mr California November 3, 2013 0 0 Get merch Get the dirty spaghetti mug. Buy Now — $32.95 See more merch