For the 1,000th time, it's "you're" not "your", you dumb hillbilly fuck.
Here's how it works .... What you really said was... "I bet YOU ARE the most intellectual out of all your family...."
In order to make speaking and writing a little more convenient, the English language contains words called "contractions".
IOW, two words are CONTRACTED (shrunk) to make one word.
In this case.... "you are" gets contracted (shrunk) into one words which is "you're"...."you (a)re" with the apostrophe ' in place of the a.
"Your" is used to imply possession.
Example "SailorFag, YOUR brain is defective because YOU'RE a dumbass redneck".
I don't understand why this is so difficult for some people but I'm really tired of having to explain it to dumbfucks like you.