Wow. You really are every bit as dense as you seem but I found an explanation at Investopedia that appears to have been written so that even an 11 yr old child could understand. Ask an adult for help if this doesn't make things clear:
After all is said and done, companies that have made a profit can do one of two things with the excess cash. They can (1) take the money and reinvest it to earn even more money, or (2) take the excess funds and divide them among the company's owners, the shareholders, in the form of a dividend.
If the company decides to pay out dividends, the earnings are taxed twice by the government because of the transfer of the money from the company to the shareholders.
The first taxation occurs at the company's year-end when it must pay taxes on its earnings. The second taxation occurs when the shareholders receive the dividends, which come from the company's after-tax earnings. The shareholders pay taxes first as owners of a company that brings in earnings and then again as individuals, who must pay income taxes on their own personal dividend earnings.
http://www.investopedia.com/ask/answers/03/102203.asp#ixzz3e58Iwnvy