A large necklace, usually gold, that were fashionable in the 1980's and were worn by such rappers as Kid n' Play, Run DMC, and the 2 Live crew.
Jam Master J: "hey Rev. Run, have you see my donkey rope? I seem to have misplaced it..."
Rev. Run: "no I have not, but i have multiple donkey ropes, so please borrow one of my extras..."