Okay.. here's how it goes.

Weed laced with meth. Take the baggie you got the weed in..roll it around and stuff..crumble up a bit of weed..does it feel a bit powdery? Is it more sticky or is it more powdery and crisp and hard? Do you see abnormal white crystals...or brown or dark crystals? Brown or DARK crystals is more than a 70 percent surefire chance their is meth in there.

Don't worry about it that much..as you need to freebase it for it take effect, ingesting it MAY cause effects, but by smoking a bowl you will not kill yourself.

It is bad though. Does your dealer deal meth? This could be a way to make more money, as you smoke more meth than you do weed.

Don't ask me how I know, I just know.