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1. A butt that is royal.

2. The nickname for one Princess Toadstool (Peach) of Mushroom Kingdom.

3. An insult, that is appropriate when someone is acting stuck up or snotty.
1. Your royal rumpus is big.

2. The Royal Rumpus got kidnapped by Bowser.

3. You're such a royal rumpus.\Your royal rumpus always gets it's way.
by Rodney Basil October 23, 2003
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