When 2 or more pimps battle over who gets to manage one of their 'employees.' These interactions are often in public (on the corner), heated, with the pimps in close proximity to each other, and might even result in an altercation, a la a rugby 'scrum.'
Did you see the pimp scrum last night?! There must have been at least 3 pimps battling out on the corner about who gets to manage Trixie. I bet her price just shot up!
The way they were fighting over the popcorn in the kitchen, it was like a pimp scrum.