When partaking of the drug cannabis using a bong or bubbler, one seals the choke or slide and inhales as much as they can, but does not release to inhale the smoke; the apparatus is passed around the circle to each person who repeats the build-up until it reaches the original person. By this point the chamber will be extremely full, and the mook-ee will attempt to inhale all of the smoke that the mook-ers have built up in one hit. Best performed with a very large apparatus and a small group of people.
Stoner: I want to take a massive rip!
Pothead: Alright, we'll mook that shit for you.
Hazer: Yeah bro, fuckin' mook it!