What does roll up some crystal clear with some tobi mean?

This is slang for something. ';what does roll up some crystal clear with some tobi ';. I saw it in my cell. My son was chatting with a friend. He said roll up something with clear , transparent paper but i am scared it may be crystal meth. Can you roll up crystal meth? Could that be the meaning of the slang his friend wrote to him?What does roll up some crystal clear with some tobi mean?
its rolling up some weed in a blunt, or zig zag etc.


what he means by crystal, is that the weed is so strong its crystaly,


the thc levels are high on the weed, so sometimes its purply, orangly, crystaly etc. lol


no worries it wont hurt him. =]