A phrase used to mock or convey doubt of a claim. The New York Times puts it as “a common punch line for dubious historical claims.” The phrase’s infamy originated from the sheer amount of such signs in colonial places used to advertise and get people’s attention.
There is also a Brodway show and movie called “George Wasnington Slept Here,” the name a reference to this phrase.
“Did you know Shakespeare invented the letter Q?”
“Yeah, sure, and George Washington slept here.”
Binky slept is a term used when an opponent in a streetfight has been knocked out, and a Binky/Soother has been placed in their mouth, this is used to severly embarrass your opponent.
"He was knocked out, and binky slept to put salt on the wound"
Kid 1 "Oh my gosh, He was binky slept!"
Kid 2 "Thats a mega Oof"