Find the most difficult tongue twisters and funny jokes.

One black, two black, three four five six seven black, eight nine black, ten black. I bought an ebony rod of a tobacco bag, and I pinched both ends of it so black. The second girl stroked her eyebrows and looked black in the mirror. On the vermicelli wall, Sichuan is written, and three blacks are seen horizontally and vertically. The legs of the ivory table are ebony, and they are black on the kang. I bought a hen that doesn't lay eggs, so I kept it in that cage until it turned black. A good mule doesn't eat grass, so he drags it along the street until it gets dark. Xiao Lv bought a head and rode it on his back without pulling it, until it was a black saddle. The two sisters went to Nanwa to cut wheat and lost her sickle until dark. The son of Yueer's child is sick, and he is moxibustion with some moxa balls until it turns black. The melon seed seller took a nap and spilled a lot. He didn't pick up his broom and dustpan, so he picked up the black ones one by one.

The fool stole the beggar's wallet and the blind man saw it. The mute gave a loud roar, which startled the deaf. Camels come forward and lame people fly. Pockmarked said, look at my face. The madman said that people should be rational.