deyuh Share definition Flag A slang term for penis; usually a penis with a lot of extra foreskin at the tip, extending two to three centimeters in length. The boy's classmates questioned the unusual amount of foreskin of his deyuh in the shower. deyuh by FlexibleAnne January 18, 2009 0 0 Get merch Get the deyuh mug. Buy Now — $32.95 See more merch