In Which I Unwittingly Fight A Bungie Cord And The Bungie Wins

On pre-dawn bike trips many hazards loom --
Both real and real imaginary; some
Are naught but shadows; others, in the gloom,
May look like lurking muggers, but just dumb,
Mute signposts stand there when I'm close enough
To make that out. I know this and prepare
Each morn for that frisson. But other stuff
No mental calisthenics can, I swear,
Quite make predictable. Of course, in part
'Tis,too, my fault for moongazing right where
A vicious bungie cord (curse the black heart
Of he who left it; may he wind up there
In trailer park hell where such boobs belong)
Reached up and caught my wheel and all went wrong.