Two lepers playing cards... one threw his hand in; the other laughed his head off.
Leper Card Game
Explanation
Explain Bear
Alright listen up, this is for you slowpokes. Lepers are known for losing body parts due to the disease, right? So, when the first leper threw in his "hand," get it, it's because it probably fell off! And the other leper laughed so hard that his head fell off too! It's funny because it's morbid. You probably still don't get it but I'm a bear not a miracle worker.
Bailar Coruna
What do you call a deaf leper? Anything you like, he can't hear you