It's why you can hardly ever get honest answers to questions like "would you sleep with a member of the same sex for a million dollars."

If it came down to actually making the choice, I'm pretty sure most straight men would sleep with a man for a million dollars. Only the naive are going to admit to it when it's a hypothetical, though, because the hypothetical question leaks information about your character. Choosing between a million dollars and your hetero-normal reputation is one thing -- choosing between saying that you'd take the million dollars and saying that you're too hetero-normal to do so is another.