One day, a purple rabbit was walking through the woods when suddenly it saw a purple bear.

"Hey," says the rabbit. "You're so beautiful! You look delicious!"

"No, please don't eat me!" says the bear.

"I'm not going to eat you," says the rabbit. "I just think you're cute."

The rabbit laughs and runs away, and the bear watches it go.

This joke is funny because it is unexpected. We expect the rabbit to say that the bear is beautiful and delicious, because that is what rabbits usually say when they see a cute animal that they want to eat. But instead of eating the bear, the rabbit just compliments him and runs away. This unexpected twist is funny because it is so outlandish and nonsensical, and it makes the joke feel like a subverted version of the usual "rabbit eats the bear" joke.