Hard situation puzzles

Eugene was watching his relatives and friends being killed, but he couldn’t wipe the smile off his face.

The woman is speaking something and she is upset. Nobody can understand her but a man is filming her on camera. Why? And what is happening?

A man designed a device into which you can insert colored paper, and then get the ideal 100$. Experts can not distinguish them from the real ones. How does he do that, and why does he sell this device?

A man woke up at night feeling thirsty. Then he turned off the light everywhere and went to bed again. In the morning he woke up, looked out of the window and yelled. Soon after he committed suicide.

A woman asks questions to her friend - a policeman - about a strange death. After 5 minutes the policeman is surprised to see that the woman finds out the cause of the death.

Eva was a skeptic, and never believed in the paranormal. But after she had spent 3 nights in a creepy forest all alone, her skepticism disappeared. Why?

The doorbell rings. Bill opens the door. On the threshold, he sees a local vagrant. "Hello," says the vagrant, "as usual, I was going around the garbage pits and in one of them found a wallet with $1,000 and your ID. You must have thrown it away by mistake." "Right!" says Bill joyfully. "My wallet! Thank you so much!" "Please check the contents." the vagrant asks. "One thousand even!" confirms Bill, counting the bills hastily. Then he takes a $20 bill out of the pack and gives it to the vagrant, "This is from me with thanks!" They part, being quite content with each other. "Who was it?" Bill’s wife asks. Bill laughs and tells his wife what happened. Why’s it funny?

A professor didn’t want to accept a student’s paper. Student: “Do you know who I am?” Professor: “I neither know nor care. And don’t try to frighten me!” But the professor still accepted the paper. Why?

Gordon came to see Harry and gave him a few strikes in the stomach. Then, they had a short talk, and he struck a few more times. Harry died a couple of days later. What happened?

At one time, the following warning notices appeared on one of the main squares of Prague, “Attention! Beware of pickpockets!” The local police knew that there really were a lot of pickpockets here, but they actively tore these notices down. Why?

A coin collector finds an internet advertisement about a coin collection at a very low price. After reading it carefully, he decides to buy it. Although it is genuine and its value is much higher than the price he pays, he is not happy but very angry.

A woman starves to death despite being surrounded by food.