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2 definitions by von Funkenstein

 
1.
ejaculate, primarily human and primarily in reference to a male, but may refer to any gender or species, also generally in large amounts.
That bukkake video had so much vattis!

or

I understand that whales release the most vattis of any animal; that's why the ocean tastes the way it does.
by Von Funkenstein November 02, 2011
 
2.
Anything happening right now that you will remember for the rest of your life.
Dude this party is a definite membrio.
by von Funkenstein July 04, 2012