Maturity, schmaturity

Even at my age, I can't help but snicker at this sign.

I grant that there is a difference between "speed bumps" and "speed humps" (regarding the height and width), and that the sign was accurately reflecting the situation on the street where this was posted. I further grant that the signs should be thusly posted to alert motorists driving down the street.

Still...

I'm not proud, but to be honest, I'm not ashamed either.