An underwater river
An underwater river…hmmm…yep that’s right, there’s such things! Made of hydrogen sulfide, what looks like another layer of some liquid within a liquid is a colorless, flammable gas and is known for it’s nasty odor similar to rotten eggs. Either way, if I was underwater and saw this, I’d be tripping!
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I MADE ONE OF THOSE IN MY TOILET THE LAST TIME I GOT A BAD TACO AT MY LOCAL STAND.