What does a fish say when it runs into a concrete wall?

I am something I carry it anywhere I go to and it does not get heavy.
What am i?

What did the tree say to the leaves?

What has two banks but no money?

Why did a robber take a shower?

If I have 7 candles lit and they go out 2, 
how many candles do I have left?

if my mom is A DOG AND MY DAD IS A BANANA WHAT AM I

A teacher is yelling, she closes the door, the window and a book but what did she forget to close?

In a taxi there is...
A pregnant lady~25 years old
A construction worker~39 years old
A random man~52 years old
Driver~76 years old
•Who is the youngest?

If I have 7 candles lit and they go out 2, 
how many candles do I have left?