A term of excitement or encouragement.

Popularised by the Scott Mills Show. Originally heard on the Radio 4 programme "The Archers" when an excerpt was used for the feature "Innuendo Bingo" on the aforementioned "Scott Mills Show".
Lad 1. We're about to win the game.
Lad 2. GO ON PIGS!

While a volunteer shouts encouragement at people trying to finish a marathon "Go on pigs!".
by Timmy Trendy February 8, 2013
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