Really? When's the last time you saw somebody prostituting themselves on the street corner so they can afford their next toke?
Yep. And burglarizing houses, and shoplifting, and etc, etc, etc.
To be fair, I've seen them do it for booze, too.
And yes, I know that *most* pot smokers don't do that. But some do.
But to answer your question - yes, I've seen it. I've had family members who turned tricks for whatever they could get their hands on, from weed to beers to glue in a paper sack.