Glowing people, yeah IMO definitely possible with weed. Without tolerance mostly though so yes your first time is great considering that.
It's subjective though, often enough when I was high (I kind of quit smoking weed after years of it) I saw things glowing more in a sense, though only occasionally was it as intense as with something like psilocybe mushrooms. So you need to have a frame of reference to compare it in the first place.
I bet it was just your first time, what other things is weed sometimes laced with I ask? PCP is possible but quite uncommon unless maybe in certain areas. Also, they will probably tell you and charge you extra! Something like cocaine is too expensive. Actually as good as all things are too expensive to potentiate weed with! So a side-question to people here: what have you ever heard of that weed was laced with?
Really, weed is
practically/almost never laced. Out of the ordinary experiences can be traced back to set & setting. (Those pretty much include tolerance or first times

)
PCP causes far more fucked up effects than glowing people, I've never tried it but it really seems like it would be out of the question that it were only weed! That's why I mention it... so considering I wouldn't know what weed is ever laced with that could cause psychedelic effects it makes it all the more probable to me that it was just your first intense try.
With the upcoming synthetic cannabinoids I can see how seriously shitty weed is potentiated to astronomical levels and not that expensively... but I have never heard of it.