A joke in which the object is to take a common word that ends in the sound "er" and add "I hardly know her!" after it for comedic effect. The end result is a sentence that can be perceived as a
sexual innuendo or some other joke but oftentimes makes absolutely no sense whatsoever. Very few words that end in "er" make the sentence actually plausible, but there are a few notable examples as described in the examples section.
It is frowned upon to
use professions or adjectives such as "Baker" or "Taller" as they can be considered cheating and anyone who uses them clearly has no
imagination. Words such as "Toaster" or "Thriller" are acceptable, and names like "Lauer" are also acceptable.
The goal of the joke is to find a word ending with the sound "er". That being said, the word itself doesn't
necessarily have to end with the letters "er". There are some cases where it ends in "re". "Creature" and "Tire" are some notable exceptions. These are acceptable.