A trucker once told me that the fifth wheel
is the round metal thing that joins the two parts of a semi ... you know, that disc covered with evil black grease
Maybe he was making fun of me. Who knows, he sounded a bit weird, and we were on a bus going from Pittsburgh
, PA to Columbus
Oh, that Greyhound speeding into the night, carrying a load of human hopes, desires, love and tired bones across the empty plains, akin to life carrying our mortal selves from nothing to nothing.
Notice that the metaphor makes both Pittsburgh and Columbus into nothing, which you may not necessarily agree with.