Slow

Approaching speed bumps as I drove into a car park the other day, I was struck by a sign reading:

SLOW

Ramp

Why do people write such rubbish on signs? The ramp (and why do we call a bump a ramp anyway?) was clearly not slow, it was firmly fixed to the road, just as it should be.

On the other hand, I had no trouble believing another sign on the way home, ‘Slow men at work’. As often as not, the men don’t seem just slow, they’re quite simply absent. However, when they're there at all, ‘slow’ does seem to sum things up pretty accurately.