So these German stoners guys came up with a way to tag walls with a fire extinguisher and have released this instructional video. You can check out their how to video below plus their disclaimer.
Disclaimer from artist in video:
“How to use a fire extinguisher to paint the big walls in your house. This video was made by professional artist. Don’t try to do it on your own, working on extinguishers is dangerous! NEVER use the wrong type of fire extinguisher.”
“Now that you know how to do it, don’t do it” – Troy McClure