He's not exaggerating any more than the guys here who think all straight men want to fuck other men.
I agree with Al Kane. Guys check each other out for comparison and it's a big testing of egos thing. Guys love the feeling that they can take another guy in a fight, and sometimes they will check a guy out to measure themselves up to him.
It's not sexual at all if the guy is really straight. It seems to be a big trend nowadays on this forum to manipulate the meaning of the word straight. Seems like you can have all the sex you want with men and still be considered straight.

I believe everyone has atleast a little curiosity about their same sex but if a guy is fantasizing about being with a man on a regular basis, NO they aren't straight.