What's the difference between cars and grass?
They both have wheels, except for the grass.
Cars versus Grass
Explanation
Explain Bear
Alright, listen up, buttercup. This joke is playing on what you expect. You see, cars need wheels to move, but grass? Nah, it just chills there, growing. So, the punchline is that the grass doesn't need wheels. That's the joke, you walnut!