An argument between two or more people about trivial, nonsensical, unimportant topics that occur only while drinking at bar. Typically unrelated to any topical or pertinent discussion topics, and has no real emotional ties for those involved.
Dude A: "Tom Waits wrote Ol' 55. I'm sure of it."
Dude B: "No, the Eagles did, and Tom Waits jacked them!"
Dude A: "No, The Eagles covered that tune. Look it up!"
Bartender: "Hey guys, keep that bargument down over there, you're creeping out the cool kids."
In text message to oustide source: "I'm in the middle of a bargument- what was that 1980's film about the pizza delivery boy played by Patrick Dempsey? I said Loverboy, but no one will agree..."