what does the below rebus means?

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

our enemy challenges you to play Russian Roulette with a 6-cylinder pistol (meaning it has room for 6 bullets). He puts 2 bullets into the gun in consecutive slots, and leaves the next four slots blank. He spins the barrel and hands you the gun. You point the gun at yourself and pull the trigger. It doesn't go off. Your enemy tells you that you need to pull the trigger one more time, and that you can choose to either spin the barrel at random, or not, before pulling the trigger again. Spinning the barrel will position the barrel in a random position.

Assuming you'd like to live, should you spin the barrel or not before pulling the trigger again?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

If two's company, and three's a crowd, then whats four and five ?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

I am an odd number. Take away a letter and I become even. What number am I?

Why do people go to bed?