It was a normal day at your house till you find a small box at your front door you bring it in and open it at your kitchen counter to reveal a big secure vial with some sort of shiny black ooze in it.

The vial looks secure like nothing can leak out or leak in, the ooze clearly in side looking thick and slimy but isn't translucent but shiny like rubber or latex.

What is it.....who brought it here....why is it here.....should you OPEN it?