There was a merchant at last year's fall festival in my town who was selling knives, knick-knacks and crack/meth pipes. I ran around telling people I knew and they wouldn't believe me, until I showed them.
The glass tubes had a little fake rose in them to make it look like it wasn't a crack/meth pipe, but anybody who knows the anything about drugs(or at least seen drug users in the movies or on TV) could tell you what it was for.

What were we talking about before we got this conversation on drugs anyway?