When 2 or more women have the desire to sleep with a particular man or men, but he or they are incapacitated for some reason. Another male may "pull a robbery" or a friend may be handed off said hoes in order to relieve his friend of the impending situation.
This term was coined by Joel McHale on "The Soup"
Hey, man you gotta get over here & take care of this hoe surplus.
We have a hoe surplus in this place, but they're all grenades