I find that you have to stir the bowl and sometimes break the clumps up. I use a pair of cuticle scissors to fill my bowl with shavings from a bud. The individual shavings are thin but wide, like slices. I vape them, then I stir and crush them a bit and vape some more.

Did you mention coughing in another thread? THC is an expectorant, so expect it to make you a little phlegmy. I've never used a bag, but it stands to reason that it would be less harsh than a whip.

I'm not sure if this is true, but some people have told me that your typical green stuff is harsher than the brown Mexican brick stuff because it has chlorophyl, which I guess irritates your lungs. Unfortunately, I've never seen a pot dispensary carry the brown stuff.