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2.
Noun:

Someone who is only interested in the rights of livestock when it is socially advantageous
1. Oh good, no one can see me eating this chicken leg!

2. Hot Chick: I think animals should have equal rights to humans
VisiVegan: Uhh... Yeah. Totally. (Hides chicken wing)
by Inigox5 February 12, 2008
 
1.
A vegan who is only interested in animal rights when it is socially advantageous. Mentioned in a Natalie Dee cartoon in September of 2006.
Visi-vegan: Even though I'm a vegan when people are around, I'm going to drink this milk because no one can see me do it.
by Shenana Gins September 01, 2008