By a strange coincidence, the four photos I picked today all have some form of signage in them. Maybe it's carryover from my last photo yesterday.
Well, that certainly clears things up.
In some binary pairs, the more massive body's gravitational field will actually suck matter away from the less massive body.
Apparently this is the primal ball-thingy-on-a-barrel.
Please excuse my ignorance, but WTF is a "Speed Table"?
UPDATE: The Google-using shadowy and mysterious Codename V. has informed me that a speed table is a variety of speed bump. Huzzah.