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A tsunami is a bathroom prank that can be performed as follows:
1. Wait for one of your buddies to use a public bathroom stall.
2. Fill up a couple of buckets of water and gather outside the bathroom with other willing participants.
3. Walk into the bathroom and shut off the lights.
4. Get your helpers to start banging on the walls of the stall while yelling, "TSUNAMI," at the top of their lungs.
5. Dump the water on your soon to be ex-buddy.
6. Run away. It'll be a few minutes before he finishes up and starts looking for you.
We gave Brett a tsunami last night! He was pissed!
by The BFD June 2, 2008
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White Tsunami

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A white tsunami is a when you throw a bucket of cum on the back of a girl as you climax. The action is usually accompanied with a loud COWA BUNGA DUDE! The girl then rides out the wave. Bonus points if she still has her sandals on.
Dude, it took me 2 weeks to fill up that bucket, but it was totally worth it to let loose a white tsunami on Andrea.
by LulzBrah June 15, 2011
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Johnny Tsunami

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Can't be used as a character name in Rock Band on Xbox Live.

For reasons unknown.
Rock Band: "The name Johnny Tsunami isn't considered what we would call 'classy' and will not be displayed on Xbox Live until the name is changed."

Us: :(
by one half em vee squared June 30, 2008
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tsunami bomb

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the best mother fuckin band ever... Tsunami Bomb rock's my world.
Agent M, you rule girl
by TB_Freak September 2, 2003
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the act of burying a female victim in the sand with only her head exposed, then having an obsurd amount of large cocked men to form a circle around her, jerk off and splurt their emaculate ejaculate at her face with the magnitude and force of a tsunami
me and 27 other guys went to the beach the other day and drowned my ex-girlfriend with a bukkake tsunami
by Tom Graziano December 29, 2007
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tsunami bomb

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by coolness August 22, 2003
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