Attempt to reason with it.

You approach with your laminated sign, speaking in soothing tones about courtesy and community standards.

The Toilet from the Black Lagoon responds by erupting in a geyser of unspeakable liquid, drenching you completely. You slip on the wet floor, tumbling forward, and with a horrifying *FLUSH*, you’re pulled into its churning depths.

And so your journey ends.

I mean it's not like there's a back button on your browser or anything.