It's not even used correctly, the way it was in the original reference. It's supposed to be a cue or warning sign that an unavoidable tragedy or disaster is about to happen.

You all don't keep Reddit on mute?

Maybe the dog is the aunt 😂

Thank you! Dogs know you by smell. The dog knew exactly whose legs it was lying on. It only moved because the person did something weird.

I agree, but there was this one time my dog was sleeping with his head on my leg, and I didn't want to wake him when I got up, so I slid a warm pillow in place of my leg so he'd keep snoozing. Five minutes later I walk into the room and crouch down next to him for pets, and he looks up at me, blinks, then looks at the pillow in terror. I'm still pretty convinced he had a brief moment of panic: “But if he's there… whose lap am I sleeping on 😰” before realizing it was a pillow.