What is the missing number?

Rodney walks into a bar and says, "Bartender, give me two shots--one for me and one for my best buddy here."

The bartender says, "You want both drinks now or do you want me to wait until your buddy arrives to pour this?"

Rodney says, "Oh, I want them both now. I've got my best buddy in my pocket here."

With that, he pulls out a little three-inch man from his pocket.

The bartender says, "Wow! And you mean to say he can drink that much?"

"Oh, sure. He can drink it all and then some," the man retorted. So the bartender poured the two shots. Sure enough, the little guy drinks it all up.

"That's amazing!" says the bartender. "What else can he do? Can he walk?"

Rodney flicks a penny down to the end of the bar and says, "Hey, Al, go get that penny!" The little guy runs down to the end of the bar, picks up the penny, and hauls it back down and gives it to Rodney.

The bartender is totally amazed by this display. "That's amazing," he says. "What else can he do? Does he talk?"

Rodney looks up at the bartender with a look of surprise in his eye and squawks, "Talk? Sure, he talks! Hey, Al, tell him about that time we were down in Africa on safari and you insulted that witch doctor!"