After getting robbed this guy decides to go to the pet store and get a
really ferocious dog. The guy at the pet store tells him, "l've got the
perfect dog for you."  So, he shows him a dog that's just sitting there
licking his butt.

 He says to the employee, "This doesn't look like a very mean dog. Do you
have any others?"

To which the employee responds: "This is the meanest dog l have. He just got
done eating a lawyer and he's trying to get the taste out of his mouth."