This is: a booger.
It is gross. It got wiped on the underside of a table at the diner by a firefighter with a great moustache. While it stayed there for a good long while, it was eventually stolen (ants have a liberal definition of theft) by a bunch of ants. Evidently, it is incredibly exciting to ants - so much so that they have had quite a few fights over it. The booger doesn't really get the big deal. They didn't even see its sweet moves in its glory days.
Connections:
Subject of: an ant fight.