Burma shave used to have six-sign adds that you’d read in sequence along the road.

E.G.:
Within this vale / Of toil / And sin / Your head grows bald / But not your chin - use / Burma-Shave

Or:
A peach / Looks good / With lots of fuzz / But man's no peach / And never wuz / Burma-Shave

Or:
I proposed / To Ida / Ida refused / Ida won my Ida / If Ida used / Burma-Shave

And the truly dreadful:
My job is / Keeping faces clean / And nobody knows / De stubble / I've seen / Burma-Shave