Is a straight man who hooks up with another man really straight?

Alright, here is the thread for this.

Anytime someone talks about "hooking up" with a straight guy, it goes off topic into a, "then he wasn't really straight/that's not what straight is" thread.

So obviously, there is a dire need for this thread. I'm shocked it hasn't been made yet.

Here is the thread to discuss all things, "labels" for straight guys.

If you think a straight guy that gets blown by a gay dude once or twice is/isn't straight, then discuss it here.

If you...

Is a straight man who hooks up with another man really straight?