Top Definition
A combination of sidetracked and outburst, referring to a random off-topic outburst in a conversation.
Person 1: "...and that's how I broke my ankle."
Person 2: "Cheesecake!"
Person 1: "What?"
Person 2: "Sorry for the sideburst, I got a craving."
by NYcJ89 June 13, 2011
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