In gaming, pubs are 'Public Players', or those randompeople that are in a server with you. If you don't have enough friends to make a complete team or squad, you might get some pubs to fill in the spaces.
Pubs can also refer to online servers without passwords as well.
Player 1: Agh, we don't have enough Infected. Wanna let some pubs in?
Player 2: I guess.
Pub 1: HEY GUIZE U RDY 2 PLAY SUM L4D? U DONT MIND IF I USE MY MIC RITE???
West Midlands slang word for rockers, bikers, greasers etc. In the late 1980s it was used by the UK music press to refer to a specific scene centered around the bands Pop Will Eat Itself and Crazyhead. The term never found favour with readers of 'the inkies' (Sounds, Melody Maker and the still extant NME) and was soon dropped. Now often used in predominantly working-class areas of the midlands and the north to mean someone who listens to rock-derived music and/or dresses in a manner that suggests they affiliate themselves with rock music of some kind.
Some grebo passed with Sabbath playing on his stereo.
The Poppies are at no. 17? God, a grebo band in the charts!
They're playing nu-metal now, bloody grebos!