What begins with T, ends with T, and has T in it?

Decode this picture on T-Shirt and tell what it says ?

Consider this: Arnold Schwarzenegger has a big one. Michael J. Fox has a small one. Prince doesn’t have one. The Pope has one but never uses it. Bill Clinton has one and uses it all the time. What is it?

What seven-letter word has hundreds of letters in it?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

When we see 2 but call 10?

Different lights make me strange by changing me into different sizes. What am I?

If Japan and Panama decided to merge into a single country, probably people will name it Japanama.

Can you think of two more such country's unions that could produce similar names like Japanama by overlapping their three letters?

What is the difference between a jeweller and a jailer?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?