Good one. Here is one good I heard. I'm not native english so I hope I will sound good.
Rabbit is smoking weed at the lake. At some point beaver is coming out of the lake.
Beaver: "what are you doing rabbit?"
Rabbit: "I'm smoking weed.."
Beaver: "Wow, can I get some?"
Rabbit: "no, go fucking away"
Beaver: "please please please"
Rabbit: "I said no!"
Beaver: "please man just a little pleaseee"
Rabbit: " ffs okay, but listen, inhale hard and dont let the smoke out, and jump into the lake, go to the other side and come again here to me, but dont ever let the smoke out"
* and so Beaver did that, but when he was half way back in the lake, he stumble upon hippo and crush into him and he lost his smoke *
Beaver: "ffs I lost my breath"
Hippo: "what were you doing?"
Beaver: "I was smooking weed that rabbit gave me"
Hippo: "can I get some?"
Beaver: "go to the end of the lake, there is rabbit, ask him"
and so hippo goes at the end of the lake, and as soon as he came out and rabbit sees him rabbit says "DAMN IT BEAVER LET THE SMOKE OUT!!"

I hope its funmy the way it is on my language