"Laboratory Rabbit" joke

A rabbit one day managed to break free from the laboratory where he had been born and brought up. As
he scurried away from the fencing of the compound, he felt grass under his little feet and saw the
dawn breaking for the first time in his life. "Wow, this is great," he thought.
It wasn't long before he came to a hedge and, after squeezing under it he saw a wonderful sight-lots
of other bunny rabbits, all free and nibbling at the lush grass.
"Hey," he called. "I'm a rabbit from the laboratory and I've just escaped. Are you wild rabbits?"
"Yes. Come and join us," they cried.
Our friend hopped over to them and started eating the grass. It tasted so good. "What else do you
wild rabbits do?" he asked.
"Well," one of them said. "You see that field there? It's got carrots growing in it. We dig them up
and eat them."
This, he couldn't resist and he spent the next hour eating the most succulent carrots. They were
wonderful.
Later, he asked them again, "What else do you do?"
"You see that field there? It's got lettuce growing in it. We eat them as well."
The lettuce tasted just as good and he returned a while later completely full.
"Is there anything else you guys do?" he asked.
One of the other rabbits said. "There's one other thing we do. We play most of the time, you know
hopping and running and those sorts of stuff. Let's go and play."
Well, our friend spent the rest of the morning playing his little heart out until, completely worn
out, he staggered back over to the guys.
"That was fantastic," he panted.
"So are you going to live with us then?" one of them asked.
"I'm sorry, I had a great time but I can't."
The wild rabbits all stared at him, a bit surprised. "Why? We thought you liked it here."
"I do," our friend replied. "But I MUST get back to the laboratory. I'm dying for a cigarette."