Well the poetry didn't mean anything much
kinda koan or haiku like. But then, you could probably concoct a pretty wierd haiku out of yours and Pub's subject-lines.
And I messed up the rhyming pattern typical of the Burma Shave ditties.
As Tom's link shows, Burma Shave was a really cool part of long family car trips. When someone sighted the first sign in the series, they would read it out excitedly. And everyone in the car would be riveted till each successive sign came into sight, untill we got to the punchline.