2 definitions by supagang

A repeated call used among brethren to alert others of one's whereabouts in an attempt to find one another. It is typically cooed with an emphasis on the oo and at a higher pitch to show friendliness.
You: Cadoo, cadoo.
Your Brethren: Cadoo.
by supagang January 7, 2010
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Pronounced: "shar-tint". A fancy way of saying "should not". Also, sharndtn't applies to all tenses. It is a contraction of sharndt not, however, sharndt is rarely used by itself. Sharndtn't has the highest vowel to consonant ratio in the English language with one vowel and eight consonants.
Sharndtn't I use this new word all the time to impress my friends?
by supagang January 8, 2010
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