Ooh ooh!! I have a joke! It's a bit long though, so bear with me!!
So there's these two farmers. Their names don't matter, but we'll call them Bob and Steve, for clarity.
Bob and Steve are neighbors, have been since they were small. They're also great friends. They both keep pigs, and have plenty enough space to keep them in.
But one day, Steve decides he wants to buy a horse. Unfortunately, his land is too small to comfortably house a horse. So, when he visits Bob for their weekly get-together, he starts to bemoan his poor situation.
"My land's just too small." Steve complains. "But I really want a horse."
"I have an idea." Bob says. "If we take down the fence between our properties, you'll have plenty id space fir a horse. And then I'll get one too."
"That's a great idea Bob!" Steve agrees.
So they take down the fence, and at the next farmer's market, they each buy a horse. When they get the horses home, however, Steve realizes they have a problem.
"How do we tell whose horse is whose?" He asks.
After a few moments thought, Bob perks up.
"I have an idea." He says. "We'll cut a v into your horses mane, and then we'll know when we look at the mane."
"That's a great idea Bob!" Steve agrees.
So they do that. But time passes, and the hair grows out, and there's no v anymore.
"Well, that didn't work." Steve says. "Now how do we tell whose horse is whose?"
After a few moments thought, Bob says, "I have an idea. We'll cut a v into the tail, which grows slower, and then we'll know if we look at the tail."
"That's a great idea Bob!" Steve agrees.
So they do that. But time passes, and the hair grows, and theres no v anymore.
"Well, that didn't work." Steve says. "Now how do we tell whose horse is whose?"
After a few moments thought, Bob says, "I know. We'll measure the horses. Surely one of them is a different height, even by a few inches. "
"That's a great idea Bob!" Steve agrees.
And, sure enough, the white horse was 3 inches taller than the brown one.
Hehehehehe yeeesssss. I love this. This is my kind of humor. My face hurts from how hard I'm smiling
Also saw your grass one in the tags btw and I burst out laughing.
