Arachnids scuttle on the walls and ceiling in the real-life horror filmed by a mother in Sydney, Australia.
The female trapdoor spider known as Number 16 lived a quiet life underground.
It would take 2,000lbs of spiders to consume a 200lb man in one day.
The palm-sized spider had crawled past 24 bedrooms to reach the loo.
Congratulations on discovering another #FantasticBeast!