Please introduce an extremely cold joke?

1. Xiaoming entered the examination room to do a question. He needed to write the word "Hui", but he couldn't write the word "Hui". He thinks in vain. . . . Surprise! Bring a bottle of drink into the examination room during the exam. There is a word "thank you for your patronage" on the bottle cap, which should be the same as grace. Sneaking, pretending to drink water, unscrewing the bottle caps one by one. Dizzy! ! ! I saw "another bottle" printed on the cover!

2. Once upon a time, there was a man named Cai Xiao. He was picked up as he walked.

3. Once upon a time, there was a man named Cai Xiao. He stayed at the police station all night. Guess what happened to him?

-He turned sour.