Reddit user ValjeanLucPicard (great username, by the way) made a spoooooky discovery while he was planting flowers in his backyard in Costa Rica. According to the album description he uploaded on Imgur, he was digging holes when he hit a piece of glass. He ended up digging more and pulled a jar out of the ground.
The top of the jar was secured with tape, but OP was like, "a spooky jar filled with a thick, dark liquid that I found buried in the Earth? I should open it!"
I'm sorry sir, but have you ever seen any scary movie ever? Are you actively trying to release a demon?