What is a "sidebar?" (slang)

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You can read about my evil neighbors in this thread: http://www.democraticunderground.com/discuss/duboard.php?az=show_topic&forum=105&topic_id=7810993

Last night, they had another loud backyard party, on a Wednesday night, from 11 p.m. to 3 a.m., and I'm surprised that I was the only neighbor bothered by it. Apparently all other neighbors slept through it, but they kept me awake the whole time. About 10 teenagers laughing and screaming and singing - obviously with the help of alcohol and drugs. I called the police at 12, 1 and 2, to give a noise complaint. Finally, at 2:04 a.m. the police showed up but there happened to be a lull in the party at that time and the cop just walked around a little, then got in his car and left. One thing I overheard was a drunken-sounding conversation between a teenage girl and two boys, where she saidk "Okay, I'll do a sidebar." One of the boys said to the other, "You know I love you." The other boy said, "Yeah, I know man." The boy said to the girl, "OK, you'll do a sidebar?" and the girl said, "Ok." Then they moved to another part of the backyard for a few minutes. So what is a "sidebar?"

[pokerfan]

1. Urban dictionary

A public request for a private conversation or meeting usually employed when in the company of others. The announcement of "sidebar" is intended to prevent others from interrupting the conversation. Comes from the O.J. trial.
Scott pulled Julie out of the party and into a sidebar to, drunkenly, confess his undying love to her.

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2. OK thanks!

I thought it was some drug or sexual term.