Part of a car, but can also be used to describe a woman's sexual organ.
Bloke: Has my car past its MoT?
Mechanic: No, it needs a new Bellhouse Flange.
Bloke: Bugger.

Bloke: Hey darling, can I fill your Bellhouse Flange up with my Pork Sword?
Bird: OK I suppose so...
by pete_ September 27, 2006
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