When I was growing up there were all these phrases we had for two-guy activity. Corning, scratching, bad birthday, ducking, knocking, kinging, dry-humping, etc - all an excuse for rubbing up against your buddies' naughty places, when (or before) you couldn't anything going with girls.
I've even heard it called practice. [Geez!]
Most of it was just bumping and grinding without real screwing, and most of it was fully clothed, and all of it was fun - but, none of it meant a da^^n thing. None of it. It was all just horsing around, blowing off steam. As soon as the girls started letting us get somewhere with them, we couldn't even remember your buddy's name.
Ask me (not that you did), labels are a little BS, I think. Even if you enjoyed 'practice', it doesn't make you gay. Just means you were a desperate, little $#*+head once and damn lucky to find somebody twice as desperate as you.
You're one thing, until you try something else and dig it. Then, you're something else, until...
Wash. Rinse. Repeat.
My two cents.