Don't know if a picture would be worth it (doubt it) but very near my residence is a "BUMP" sign that is posted after the bump it refers to. Makes me shake my head every time.
Saw one in Oklahoma for 46mph. Apparently the Oklahoma DOT doesn't let a little thing like running out of 5s or 0s stop them from making speed limit signs
I have a few customer sites that have signs that say Speed Limit 29. They say they are more effective because folks just ignore a 30MPH sign, but 29MPH gets your attention.