Hard situation puzzles

Two women are talking. One goes into the bathroom, comes out five minutes later, and kills the other.

A man stole a wallet. This caused his death. What happened?

She thought that it was the best day of her life moments before she died.

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?

In the 1950s in America there was invented a chicken gun. What for?

Students are taking an exam at military academy. One of them chooses a ticket and goes to his seat to get prepared. After some minutes he goes to the professor, silently gives him the student's record-book and leaves the classroom. The student got the excellent.

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.

A woman dies from a long telephone conversation.

A young woman has her photo taken with her grandfather, but they have never met before, and neither of them is aware of their relationship.

A man was walking with a gold ring on his finger. Suddenly robbers attacked him. They wanted to take the ring but couldn’t take it off. So, they cut off the finger and ran away. However, the man didn’t even scream. Why?

Why did a healthy young girl put a gypsum on her arm, which was not damaged?

Three dead men sitting at a table in a room. On the table, there are playing cards and a gun. What happened?