“Bar Fight!” is so low-stakes and small-scale that at times it feels more like a TV sitcom pilot than a film. But this would be a pilot worthy of a pickup.

It mostly seems as though someone came up with the concept while out drinking with buddies of their own. But “Hey, wouldn’t this make a great movie” ideas often look better on a napkin than a screen.

Bar Fight! wants to be the best night out of your life, but – mistaking dodgy drunken acting for ambience – it feels pretty ersatz throughout, like one of those pseudo-Irish bars that has bought in all its decor.

This is a rote relationship comedy (if the latter word even applies) that goes down like the nastiest, cheapest brew you can imagine.