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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!
Tsunami by The BFD June 2, 2008
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In Ohio, it means you are about to get it in, in Japan, it means your shit just got fucked up.
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when an asian girl squirts pussy juice while reaching climax during intercourse
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Jose: Damn yo!!! Probably from Sook Ling's tsunami last night!!!Imma get more DIM SUM TONIGHT BOY!!!!
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"Let's go tsunami"
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1. Massive waves sometimes up to a thousand feet high caused by undersea earthquakes or volcanic eruptions.

-From Japanese, port (tsu) wave (nami).

2. A large, unstopable force.

3. A character on the popular anime "Tenchi Muyo!"
"Schismatrix" is a tsunami of imagination (actual review).
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A big easyly surfable wave
"if them pakis knew how to surf they would of survived"
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