i had a guy in my social studies class in middle school and he had this theory, "you can't ever hold your breath and purposely suffocate yourself that way."
the teacher was like, "really?"
and he was like, "yeah, i'll prove it... watch me. i'll try to suffocate myself that way."
he holds his breath.
the whole class looks at him like. O.O
after a while, he's gasping for air. "i proved my point!" he shouts.