first off, your an ass for pinching a bowl from your buddy, second a bunch of people fucking do it, if it was laying around at a party..one time I left an 8th out on the counter in my apt., and when I came home, I had a bunch of roomates/friends all high off my brand new 50 dollar bag. Another time, I had like 2 g in a bag at a party, at MY apt. and the bag disapeared...so I dont trust nobody no more with my weed, and I keep it locked up all the time.

As far as your friend..dont stress...tell him you pinched a bowl and give him 3 bucks. Fuck it aint that big of a deal. Just 0.3 worth of weed. People have fucked me for half ozs before.