Whore Arm
Modern version of the Tramp Stamp. Where a single tattoo rests upon the forearm of sexy young ladies.
Damn did you see Abi's Whore Arm? She makes that shit work!
Arm Whore
The slightly-hot blonde chick that you see hanging onto the arm of every other rich guy at parties, sporting events, ect. Usually a gold-digger, but not always; The act of being an "Arm Whore"
Did you see the chick with Tom? She's such an arm whore!