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Projectile vomiting and/or dry-heaving at loud volumes. Produces a noise similar to a lion roaring. Usually happens between the hours of 3-7am, but occasionally will occur after waking in late-afternoon. Extremely funny to watch.

Often is videotaped and posted on Facebook.
Person A: Where's Phil?

Person B: He just puked, it was a real Lion's Roar!
by Bad Sebs June 03, 2009
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