Strongest pimp hand belongs to Mrrungo-Mu, easily.
He took a lunging slash to the face from Wolverine without any effect, backhanded him away, then knocked out Thing, Wonderman, Colossus, Rogue, She Hulk, and Thor with a single backhand that connected to all of their mouths consecutively in one swipe, then knocked out Namor with another slap and grabbed Grey Hulk by the throat and sucked out his life force.
Then, after all that, he sat down and drank some Cristal from his pimp cup.
^ That's pimpin.
He even got Battlecat as a f*ckin' house pet.