A blind man walking his dog stops at the cornor to wait for traffic. Suddenly the dog lifts his leg and pees all over his owner's foot.
The blind man then reaches into his pocket, pulls out a doggy treat and gives it to the dog.
A bystander watches the incident unfold... he walks up to the blind man and says " Why would you give your dog a treat? You can't reward him for that behavior!"
The blind says " I wasn't rewarding him, you idiot! I was trying to find his head so I could kick him in the A$$!"

Wonderfully twisted sense of humour!