Yes. Easily. So easy in fact all you have to do is put the crystals on top of the weed and vaporize (i.e. hold the flame above it) it.
Some fucker put some on my weed,i went to a sketchy place for a small bag, i notice white residue left over in my bowl, Im so dissapointed.
Or maybe i just got really fucked up off some good weed,it was a really strange high and it lasted really long. I dont know.
Well if it were laced with methamphetamine, it would've been pretty obviously apart from a weed high.
I personally would never smoke the two together. I don't do meth very often and I'm certain that I won't do it much anymore, if any at all, anymore, but when I would do uppers like that, it was because I wanted to be stimulated, you know ( usually to self-medicate the depression off-set by being bi-polar ) and to make me back up again from the depressing rungs of depression. However, if I'm smoking weed, I'm smoking that to get stoned and be silly and laugh and eat and listen to music loudly and have philosophical conversations. So, I would never mix the two, frankly it wouldn't satisfy me to treat to separate needs. Either one or the other. Oh yeah, definitely.