The technical term for a cat’s hairball is a “bezoar.”
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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Switching letters is called spoonerism. For example, saying "jag of Flapan", instead of "flag of Japan".
2
A “butt” was a Medieval unit of measure for wine. Technically, a 'buttload' of wine is about 475 liters, or 126 gallons.
10
The word "impossible" dropped in use by 50% over the course of the 20th century
5
Anuptaphobia is the fear of staying single.
11