When someone is taking a hot, steamy, shower and someone else goes into the bathroom and takes a shit without any courtesy flushes.
“I woke up and hopped in the shower and my boyfriend went in and dropped the nastiest Steam Demon- he damn near suffocated me.”
It's when your shit is so hot that when it hits skin that bitch turns into a homemade steam room.
Brad - Hey Nick come here!
Nick - What?
*Brad shits on his arm
*Nick autistic scream
Brad - STEAM DEMON!!