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.