See, my girlfriend had just dumped me, and, obviously, I was pretty depressed. So, my friends suggested that we go to Las Vegas, try to cheer me up, the usual.
Oh, and another important thing: See, around 20 years ago, a sort of plague started among the animals. It only affected younger animals, and no one was certain exactly WHAT happened when they were afflicted by it, but what we did know was that their body painfully transformed into that of a human.
Granted, they would never be completely transformed; They retained things like fur, muzzles, tails, the like. So, they had to adapt to human life.
Anyway, we were at the bar, things were going good, and I almost forgot about my old GF. So, I had a few drinks.
See where this is going?
Eventually, I woke up. At first I wasn't quite sure where I was. I initially thought it was my room, but then I remembered that my room didn't have a ficus.
I heard a groaning behind me. It was feminine, so I knew that I must have gotten laid. I racked my memory, trying to remember who I had found myself with. I thought, and the most I could remember was that whoever it was I was with, she had sandy hair.
"I really need some light..." Opening the window, I was greeted with a blast of light. Coupled with the hangover from last night, my headache was nearly unbearable. "Ugh... Close the window, you a..."
My companion gasped. Turning to face her, I realized who, or more appropriately, what, I had slept with. And she wasn't human.
I had slept with a kangaroo.