Fancy Piece 

A lady friend who is neither a girlfriend nor second date. A semi regular shag

Whats going on this weekend?
Well its fancy piece Friday tonight

Fancy Piece by Badgerlove February 14, 2008

fancy a piece of my pie 

This is when you are flirting with the opposite sex and you want to get their attention to have a bang, you say "hey, fancy a piece of my pie? Its moist and delicious".

"hey, fancy a piece of my pie? Its moist and delicious".

fancy a piece of my pie by pie_faceblabla17 January 10, 2017

fanny-piece

A derogatory term. A complete and utter twat! A numpty.

"You are a fanny-piece"

fanny-piece by twaddlesome June 29, 2009