The hand that one uses to dig out the "slob" from there deepest crevices. The hand one uses to remove the excrement from their rear.
Guy 1: "Hey it smells like slop in there!"
Guy 2: "Yea I'm almost done, pass me some toilet paper to cover my slop claw"
Guy 1: "Jesus, you smell terrible!"
Women 1: "Yea ever since I fell off my skateboard, and broke my slop claw, it's impossible to wipe!"