"Hey, any spare change?"
I looked sadly at the tramp accosting me from the street. I felt sorry for him - he looked like Santa would if he had a bad few months - so i reached into my pocket and threw him a few pounds.
"Thanks!" He replied, "Now I'll grant you three wishes."
"Really?" I asked.
"Yea, sure." He replied, "As long as you want chlamydia."