Yeah dude, two months? Thats bull. I've personally had weed for 3+ months. Before I started smokin' again I got a free sample, like half a gram. Didn't get a good chance to smoke it, so it sat for like 3 months before I touched it. Thats just how long I had it too. It was in a BAG too.

I can't tell ya' exactly how long, but don't worry 'bout it too much, unless you aren't gonna touch if for like, 5 years. It might turn into dust before then.