1 definition by Matt Wilmott

Top Definition
a small dietry biscuit which can help you lose wieght.
The most blasphemous insult ever created.
Toby is a water biscuit.
Toby is on a diet. He is eating water biscuits. Mate
#water #biscuit #water biscuit #aquatic snack #insult
by Matt Wilmott January 10, 2006
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