Top Definition
The mass of fat on very large woman or young girl, located between the stomach and twat. Women sporting twat biscuits usually wear very tight shirts, often so short that the tummy is exposed and flops about over the top of their twat biscuit and jeans.
"Wow, that woman has a spare tire AND a twat biscuit!"
#twat #biscuit #fat #obese #chunky
by JKH82 February 02, 2010
A person who is generally not liked.

Prone to ruining things, a twatbiscuit is never too far away.
"Hey Conor?"

"Yeah?"

"You're a twatbiscuit."
#twat #biscuit #jew #bastard #cunt #idiot #asshole
by E-dog January 10, 2013
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