Going to the bathroom in the middle of the night is a pain, but this video proves why you should always turn on the light, even if it wakes you up.
This man's girlfriend woke him up after he heard her screaming in terror.
See also: Woman finds huge snake in London kitchen
It turns out she had discovered a rattlesnake swimming around in their toilet water.
He rushed to her aid to see what was all the commotion and discovered the wild animal slithering in the water.