I have been amused/ disturbed by this sign, on route 102 on Mt Desert Island (Maine) as you approach Town Hill, for years. The sign used to be weirder before they added the quotation marks, and maybe the apostrophe too– I swear that it used to just be straight-up Rats/ Fresh Clams, but then they finally added the quotation marks to clarify.
Anyway — the punch line is that Rat’s is fantastic!!! Great lobsters and steamers and the people are lovely. “Rat” is the guy’s first name, I do not know what it is short for. They have a nice chicken coop too (thus the eggs).
Highly recommended…
Ivan Kreilkamp 
RAT stands for Richard A Taylor.
LOL
His name is Richard Alan TAylor, hence RAT’S. I just rolled by there this afternoon for some steamers and his wife gave me the low down on the name.