F

[fag end]  {n.}

the used stub of a cigarette and by extension the unpleasant and worthless loose end of any situation.

[fanny]  {n.}

female external genitalia, a woman's pudendum.

[fanny adams]

(Usually preceded by 'sweet' and often abbreviated to F.A., S.F.A. or sweet F.A.) Nothing at all. A euphemism for fuck all.

[fence]  {n.}

Someone who deals in stolen property.

[filth (the)]  {n.}

The police (derogatory).

[fit up]

A frame up.

[fiver]  {n.}

five pounds.

[flasher]  {n.}

Someone who indecently exposes oneself.