Top definition
A butt (or buttocks).
This term was coined when used in coded languages by the Japanese during World War 2. The code for "buttocks" when decoded and put in English spelt: "bluttis".

Since then it became a fad among British cryptographers and then some Canadians.
Butt = bluttis

Jack: I injured my butt during that heck of a bike ride.
British cryptographer: You injured your bluttis?
by JustARegularGuyCalledAnon April 24, 2008
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug