meatvangelist 

one who encourages the consumption of meat by a person who rarely or never eats meat.

A: Was this an attempt to get me to eat meat?

M: I’m no meatvangelist. You do what you want to do.

meatvangelist by Mike Hillman August 10, 2007

megavangelist 

Member of the wealthy and influential echelon of religious evangelists, usually with a succession of Bible products, national TV and radio shows, best selling books. Often holds controversial cultural views (i.e. Pat Robertson, Jerry Falwell, James Dobson) but may also refer to those who simply have large following (i.e. Robert Schuller, Billy Graham).

Sure that televangelist is popular and has his own TV show, but he's not a megavangelist with his own corporate complex, 20,000-member church, and media empire.

megavangelist by Zeus Yiamouyiannis October 21, 2007

Metalvangelist 

Someone who possesses a keen knowledge of Metal music and other great yet obscure bands and albums.

I was at the DMV and I ran into this Metalvangelist who explained to me that my favorite band really sucks, and he was right!

Metalvangelist by Saajin March 13, 2010