When a roach is lodged in the hole in the bowl of a pipe pointed up vertically like a smoke stack on a train. The user then covers the carb and takes a hit.
We were so blazed that it was getting difficult to pass the blunt. Ev was itching to use his new pipe so Bleezy took the roach and made a Cali Smoke Stack. Nobody burned their fingers and the smoke was a lot cooler. It was great.