It's pure fun. The stage opens every night at 8:30, playing to senior citizens weekdays, then giving way to yuppies on the weekends. Anything goes here, except pretension. Look too serious, and you're likely to be volunteered as the opening act by one of the matronly waitresses who've called Ernie's home for longer than they'll admit.
Go ahead. Choose your poison, step up to the stage and wail with the rest of us. You're among friends -- or at least you are until you segue into "Feelings."