Facebites Day!
Your wife hates you. She hates you so much that she sometimes stares at you while you sleep, miserable with just how much ugly she has to cede half her bed to. The more she stares, the more her blood boils, until she spreads her jaw open wide, wracks her head down at your face and rips her teeth into the skin on either side of your nose, trying to rip the center of your face off in her maw.
You wake up screaming into her neck. She recoils and cowers into the corner of the bedroom. You pant by the pillows, blood pouring forth from the gashes in your face. She says, "I hate you so much I'm gonna kill you one night. While you sleep."
Happy Facebites Day!