Because this was a stuffty description of drugs.
You know what I mean, don't try to be a smartass. I'm talking about recreational drugs, and if you can't even figure that out from the context clues in this topic then you are likewise, very sad.
I can just imagine your conversations at school:
Kid: "Yeah I got a B on my test the other day"
You: "HOLY stuff A BEE WAS ON YOUR TEST?!"