What is Greenis?
1.
1. An imaginary unit of vegetable, approximately equal to one "greenie," a type of dog treat. However, it can be used in almost any way imaginable (think 
1. Go crunch on a greenis!
2. Holy fuck, look at that huge greenis!
3. I bet you a greenis Dumbledore will die in the sixth book!
See 
2.
A person with the last name green whos penis happens to be very small
man, you are a greenis
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