jaccubus
A jaccubus is a demon that doesn't have sex but likes to wake up guys in the middle of the night and make them jerk off until they're sore and their nuts feel like they're on fire.
My brother says a jaccubus came to him every night for a week. He had to wear socks to school.
I woke up screaming because my toes were numb and my brain was melting.
My dad said he saw a jaccubus in his sleep and it was wearing a tiny hat.