A guy walks into a bar carrying a gym bag. He sets it on the bar, unzips it, and inside is a human head. "Oh my goodness!" says the bartender. "What's that?"
"This is my son," says the bartender. "He was born without a body. And today's his 21st birthday, so I thought I'd get him a drink to celebrate."
So the bartender gives the head a drink and BAM! there's a flash of light and a cloud of smoke, and the head has grown a body!
"Wow!" says Dad, "That's amazing! My son has a body! Give him another shot!"
The bartender does and BAM! The kid grows legs!
"Another!" says Dad.
BAM! The kid has arms!
By now Dad is weeping. "My son is whole," he cries. "I'm so happy! To celebrate, let's give him another shot!"
So the bartender does, and BAM! There's a cloud of smoke and a flash of light-- and the kid disappears!
As Dad looks shocked, the bartender says: