Taylor's biggest sin

• Trying to convince Haley she was dying the first time she got her period.

• Telling Crazy Uncle Franks that Quinn had a crush on him.

• Sleeping with Quinn's ex-boyfriend in their mom's car - and telling her Quinn did it.

• Hooking up with Nathan in high school, and then skeezing all over the place every time they see each other again.

• Hooking up with David -- and making out at the dinner table!

• All-around bitchitude