This person, who left their car window cracked open and came back to find that someone left these for them:
"So it’s some flowers in test tubes that were in this weird-smelling liquid (maybe old water). I’m just so disturbed by this. Not sure why someone would do this."
While most of these are super creepy (thanks for posting this in the morning not at night) this one is easy. Micro etching on the glass will cause bubbles to form in the same pattern as the etch, either advertising or prank...
Cool story bro