How to recognize him:

Will ask several times if your weed is laced with PCP. Seals off bottom of door with a towel before smoking.

Overheard saying:

"I can't feel my legs, guys. Can you feel your legs?"

How to freak him out:

Look out the window and say, "Are those cops?"

What to do if encountered:

Remind him to focus on breathing.

Related to:

Guy Who Locked Himself in the Bathroom and Won't Come Out