Originally Posted by SteveHd
I disagree, partly. The topic/question could have been worded better; he could have omitted "knowingly" since that's superfluous. I have a hunch that the O/P's native language isn't English.
I can allow a guy saying he's "straight" even if he's sucked another guy a few times. I'd regard that as experimentation as opposed to calling him "bi".
As nqt asked, how can you "unknowingly" get sucked or suck another dude. Unless you've been drugged, forced via gun point, or some other circumstance in which it is beyond your human control. Than and only then can you retain "Straight" status.
But if you sucking some dude off or vice versa, KNOWINGLY, then you are NOT straight. You are bisexual. Or at least Bisexually curious i think they call it.