A man walks into a bar with a kangaroo on a leash. The bartender looks up and says, "Hey, you can't bring that kangaroo in here!"
The man protests, "But this is my emotional support kangaroo! I absolutely need him with me at all times."
The bartender raises an eyebrow and says, "Alright, fine. But he better behave himself."
The man and the kangaroo sit down at the bar and order a couple of drinks. The kangaroo is surprisingly well-behaved, sitting quietly and sipping his beer through a straw.
After a while, the man gets up to use the restroom. Just as he's walking away, the kangaroo leans over and whispers to the bartender, "Hey, I'll bet you $100 that I can beat you in a drinking contest."
The bartender can't resist a challenge, so he agrees. They both down shot after shot, but the kangaroo easily outdrinks the bartender.
Flabbergasted, the bartender hands over the $100. Just then, the man returns from the restroom and sees the cash in the kangaroo's paw. He exclaims, "I knew it! That kangaroo is a hustler!"
The bartender looks at the man, then at the kangaroo, and says, "I don't know about that, but one thing's for sure – he's definitely a bar-roo-ker!"