When I first saw this vid, I wasn't even looking at how much vapor was in the bong, but more of how much vapor he exhaled into the air. It's a lot for such a small bowl.

Yeah, the bong is small, but that's a lot of vapor clouds (on exhale) from 0.025g., and he said that he could get a few more hits, but he likes his vape a bit on the medium rare side.