the.com/ratchet
a tool that only lets you move forward, which is more than most people manage
one directionA pawl lets the gear turn only one way
that soundThe clicking is the pawl skipping over teeth
body clockEvolution can ratchet too, traits hard to lose
slang flipCame to mean wretched, then a whole vibe
space-tightLets you tighten bolts without removing the wrench