At the time, I found this to be peculiar…

I mean, at first they start speaking to me telepathically about monetary systems and sub-strata space travel.  Next, the un-lubed probes and tracking devices!!!

And now, my coffee???

No one, and I mean no one messes with my fucking coffee!

This is war!!!

Kidding aside, I’m sure anyone whose brain wasn’t primed to see this would have just simply wiped it up instead of taking the time to photograph it.  If you look closely however, you will see that aliens also poo.  Or at least coffee aliens seem to.  It’s probably from the peristaltic action that the caffeine stimulates.

Who knows.  It is all just speculation at this point.