Hmm...increased risk of a heart attack? Doesn't surprise me.

Old guy #1: Psst...don't tell the nurse I snuck this joint in. *toke*
Old guy #2: Okay, but pass that shit. *toke*
Old guy #1: Shit, we can't get caught doing this. *toke*
Nurse: *knock knock* Open up! I smell marijuana!
Old guys: Jesus Christ! *both get scared shitless and die of heart attacks*
Nurse: I knew it! Marijuana kills!