AWoL users pour a shot of their favorite spirit into a diffuser capsule, which is connected to an oxygen pipe.
Oxygen bubbles are pumped through it, absorbing the alcohol and creating a smoky-looking vapor, which is then sucked through a tube and inhaled.
The whole process takes about 20 minutes.
Seems like a pain in the A$$ to me. Sit there looking like an idiot for 20 minites with this pipe hanging out of your mouth.