How do i get a facebook without my family knowing?

im only ten turning 11 october 25th i want a facebook really really bad im a good kid so i asked my parents my mom said yes but my dad "the mean one" if i could and he said no my rents arent good with computers but my older bro whos 25 is really protective and a tattle tale if he finds out that i have a facebook without my rents knowing my will be permenetly RED!i dont know what to do!!!