Can you outsmart the trick question?

Take this quiz full of questions that are sure to twist your brain.

1 Why are 1968 pennies worth more than 1967 pennies?
2 If Mr.Smiths peacok lays an egg in Mr.Wright's yard,who owns the egg?
3 Is noon AM or PM?
4 A man and his son were in a crash. The man died and the son went into surgery. The surgeon said"I can't operate on him hes my son".Why?
5 How many months have 28 days in it
6 If there are six apples and you took away4 how many do you have?
7 How many birthdays does the average human have?
8 What do you sit,sleep on, and brush your teeth with.