let's go smoke some marijuana

hi. i don't smoke pot. but i'm around actors and comedians a lot and some of them think it is part of the job. here's my question; why can't they just call it smoking pot?
it seems that each group has its own little code words and lingo for smoking pot. "hey, todd. you wanna go walk the dog with me?" these people truly are paranoid and they're not even high yet.
i heard someone call it playing cards one time. i chimed in, "ooh yeah, i'd love to play cards." my friends made downcast glances and said they weren't actually going to play cards. one of them cleared their throats and said, "we're uh... going to change the filter on our A/C unit."
it's even worse over the phone.
"so, toby, you get that baby-changing platform i asked you about? uh-huh. uh-huh. how much? a whole pound?!? . . . uh.. of baby changing . . . platform? yeah, that sounds great... uh-huh. $11,000?!? alright. i DO love my newborn . . . pot-smoking addiction."
like the govt is listening in on every stoners cell phone.
"he just said 'jane.' he might be talking about pot." "LET'S ROLL!"
these people think they're the guy in goodfellas. he never took calls or made calls. he only got information from his right hand man who had to make calls from pay phones in the rain.
like the govt has nothing better to do. well, maybe they don't.
I actually overheard someone at a party the other day refer to it as online banking. i laughed at them and called them stupid.

but i've got to admit it is pretty clever.
b