A mythical fairly like creature that can not been seen by human eyes.

It is said to thrive and lay eggs in areas where there is an alcohol concentration between four and five percent.

Often mistaken as a fruit fly

Used as an excuse by gay chefs to explain why beer has gone missing
Jermaine: Yo Ange mate what happened to my pint it was full when I left

Andrew: Fuck knows mate it's those god dam beer flies again (while wiping his lips after sipping the beer)

Jermaine : God damn you Beer Fly!!!
by FunkiestCoffee July 13, 2010
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When a beer just appears
Oh I was just sat down sobering up by Fulham Riverside then there was a flying beer to the rescue.
by Dave Davies August 2, 2022
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