A fork of Rural Dictionary
Refers to an assistance-related question --- either a request for a favor or an offer to provide help yourself --- regarding a slightly "cranky" subject dat da person whom you're approaching might otherwise feel annoyed/embarrassed to be queried about; you therefore "soften the blow" by humorously "packaging" your question as a knock-knock joke, and using da first name of dat geeky-lookin' Prez wif da round-rimmed spectacles as da name of da "visitor" in da joke.
Here are da two “classic” ways dat ya would smilingly employ da “pince-nez president poser” to hopefully lessen da distress dat your listener would likely feel to be asked said question: To ask da person for his assistance: “Knock, knock…” ”Who’s there?” “Woodrow!!!” ”Woodrow, who?” “Woodrow be reasonably able to ___ for me sometime in da next few days?” Or to offer da person your own assistance: “Knock, knock…” ”Who’s there?” “Woodrow!!!” ”Woodrow, who?” “Woodrow like me to ___ for you occasionally, if it’s reasonably convenient for both of us?”