A guy goes into a bar, orders twelve shots and starts drinking them as fast as he can.
The bartender says, "Dang, why are you drinking so fast?"

The guy says, "You would be drinking fast if you had what I had."

The bartender says, "What do you have?"

The guy says, "75 cents."

Very funny Phantom

Similar, very old one:

A guy goes into a bar and says, "Quick, a pint of beer before the trouble starts."

The barman looks around the sleepy bar, shrugs and pours a pint for the guy.

The guy drinks it fast. "Quick! another pint of beer before the trouble starts."

The barman looks at the guy oddly but pours another pint and gives it to him.

The guy drinks it fast. "Quick another pint of beer before the trouble starts."

Barman pours a third pint with a frown on his face but hands it over reluctantly.

Again, the guy drinks it fast. "Quick another pint of beer before the trouble starts."

The barman replies, "Look what trouble is this then?"

"I haven't got any money."

A mangy looking guy who goes into a bar and orders a drink. The bartender says, "No way, pal. I don't think you can pay for it."
"You're right," the guy says. "I don't have any money, but if I show you something you haven't seen before, will you give me a drink?"
"You have a deal, my friend," says the bartender.
The guy reaches into his coat pocket and pulls out a hamster. He puts the hamster on the bar and it runs to the end of the bar, down the side of the bar, across the room, up the piano, onto the keyboard and starts playing Gershwin music. The hamster can really play...
"You're right... I've never seen anything like that before," says the bartender. "That hamster is really gifted."
The guy downs the drink and asks the bartender for another. "Will that be cash or another miracle, pal?" asks the bartender.
"Watch this," replies the guy. Again, he reaches into his coat again and pulls out a frog. He puts the frog onto the bar, and the frog starts to sing. The frog has a marvellous voice and great pitch. A fine singer. A stranger from the other end of the bar runs over to the guy and offers him $300 for the frog.
"It's a deal," says the guy. He takes the three hundred and gives the stranger the frog. The stranger runs out of the bar.
"Are you some kind of nut?" asks the bartender. "You sold a singing frog for $300? It could have been worth millions. You must be crazy."
"Not so," says the guy. "The hamster is a ventriloquist."

All very funny