Geez, no one seems to know the answer!
Heres what its like for me, and most people who take the time to focus on the high....
As soon as you're stoned, you won't know it yet, after a few minutes, you'll remember the last few minutes but you'll feel as if it all happened without you actually having any control over anything, as if you're body and mouth went into 'auto pilot'. You'll be amazed and try to think about how it all went down and then BAM you're back into it again. Eventually you'll notice that time is going by very slowly, so slow that you notice every thought that passes through your brain, and you can even feel how each thought was constructed.
Even a trip from the living room to the bathroom feels like an hour long adventure. Although it took probably 2 minutes, you remember every step, every thought, the struggle to get the door to close properly and the distant voices in the background that made you think that hundreds of people had showed up outside waiting for you to exit.
You come up, and then down, then up, then down again over and over. Sometimes everything is funny as hell, other times you come temporarily down and feel awkward. Your mouth becomes extremely dry, and no bag of chips can suffice your hunger.
You realize how much fun your having, and by the time it all clicks, you are coming down completely. Time to smoke another bowl!
Thats how it works! If it's really good bud, you won't even see it coming, it's almost as if it's a memory already. Pot seems to slow everything down. It doesn't allow you to think faster in shorter periods of time, but it allows you to analize the thoughts that you would already have and then black out. Fun fun fun! Believe it or not, its a blast.
I remember several times that I had friends over and we planned to go somewhere to do something, and then we would get high first. Next thing we know, we'd been smoking it up for hours and completely forgot what we were gonna do.
Blah, I'm gonna smoke some now. Have fun!