Top Definition
when your beer suddenly decides to foam up and over the bottle top, -whether a fresh beer or not! (fresh having the most 'vigor'!)

-like the human version, one can never know EXACTLY at what moment this messy event is going to occur! if you're lucky, you can get your mouth over the bottle, before you get the 'pee'!! (-sometimes one can 'put this carbonation to work' (see action, my reaction!) for 'giggles'!)
eyeing beer second! i think i'm in for a beer ejack!

my beer did a beer ejack, i had to hit the 'porcelain room' to

'mop up'!!

a salesman was in foolsley's selling beer ejack gloves!!
by michael foolsley February 26, 2010

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