Top Definition
The act of two dinosaures having sex in a public area while wearing cowboy hats, sombraro's or holding captain Feather Swords, feather sword (wearing all three objects and the same time is not considered Rigetöriom).
A Tiranosaures Rex and a Velocerapter were having Rigetöriom.

Jim: A T-rex wearing a cowboy hat and a Velocerapter with a feather sword a having sex in the park, whats that called Bill?
Bill: Rigetöriom
by King Casket February 07, 2011

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