There's a scene in the new movie "Bruno" where the title character brings a baby that he adopted onto a talk show. The crowd of mostly African-Americans start booing when he states that he's looking for Mr. Right.
In a deleted scene, he states that he will disown his adopted son if he doesn't turn out to be gay. Sounds so ridiculous, but think of all the people who have disowned their own children when their sexual preference did not line up with their own; this despite studies that approximately 10% prefer the same sex across virtually all mammalian species.