Definition of "biffo"

Barrett's working class man is simply one who enjoys his beer, his rock music (like Norton, he's a man in his early thirties), and a bit of biffo.

2006, Christine Matzke, Susanne Muehleisen, Postcolonial Postmortems: Crime Fiction from a Transcultural Perspective, page 236

We all liked a bit of biffo and gunplay, so when the telecast was broken for a newsflash, everyone groaned.

2005, William McInnes, A Man's Got to Have a Hobby, unnumbered page

Things peaked a year later with a Sunday afternoon biffo pitting a good-sized detachment of rockers against a combined force of surfies and clubbies.

2010, Matt Warshaw, The History of Surfing‎, page 207