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1.
The gas released out of ones anus after heavy consumption of beery type products.

Also refers to the releasing of cobblers from the mouth aka Bollocks
A) (fart) - yuk! you stink tola, thats some serious beer gas you've got going on.

B) Liverpool are a top four side.....nah im just chatting beer gas again.
by Bigcockman1 June 01, 2010