Harry and his wife are having hard financial times, so they decide that she'll become a hooker. She's not quite sure what to do, so Harry says, "Stand in front of that bar and pick up a guy. Tell him a hundred bucks. If you got a question, I'll be around that corner."
She's not there 5 minutes when a guy pulls up and asks, "How much?" She says, "A hundred dollars." He says, "All I got is thirty". She says, "Hold on," and runs back to Harry and asks, "What can he get for thirty?" "A hand job".
She runs back and tells the guy all the gets for thirty is a hand job. He agrees. She gets in the car. He unzips his pants, and out pops this HUGE penis. She stares at it for a minute, and then says, "I'll be right back."