Is there a joke that made you laugh so hard?

Joke of "Keep Biting":

One day, the eldest brother and the second child went to the theater to watch a play. They saw the two of them arguing about the development of the plot during the movie, and they made a bet about it. The boss pointed to the row of spittoons in front and said, "The loser has to take a sip of what's there." Unfortunately, the boss lost, so he frowned and took a sip. The two then bet on the following plot, and this time, the second child lost. The second child picked up a spittoon and drank fifteen big gulps. The boss was shocked and looked down in admiration. He said to the second brother, "You are so amazing. You can drink fifteen gulps in a row!" The second boss shook his head and said, "It's not that I want to drink. The phlegm in that spittoon is too thick. I really don't want it." Keep biting.