You can't say you hate something if you've never tried it. Why doesn't this apply to sucking dick? I say that if you suck dick once and decide you don't like it that is more straight than never trying dick because that means deep down you might have a hankering for dick that you don't know about because you have never tried dick
It's pretty sus if a "straight" man refuses to suck a cock. What are you afraid of, that you'd enjoy it too much? If it really doesn't do anything for you, you should be comfortable with doing it as a good way to kill time and get closer to your bros.
Just playing pranks on my friends haha