Pro Beast 

To be professional at something and be beast at it too.

Dude that guy is hella pro beast out on the football field.

Pro Beast by cujobaseball22 February 11, 2009

Pro Ex Beast 

The shorter and more commonly used version of the term "Pro Extreme Beast". Which means "What you say when describing something or someone that is amazing. It is usually shortened to just Pro Ex Beast."

"Wow that guy is Pro Ex Beast at Call of Duty." or "That kill cam was so Pro Ex Beast!!!"

Pro Ex Beast by PRO xASSASSINx April 16, 2013

Pro Extreme Beast 

What you say when describing something or someone that is amazing. It is usually shortened to just Pro Ex Beast.

Wow that guy is Pro Extreme Beast at Call of Duty. or That kill cam was so Pro Extreme Beast!!!

Pro Extreme Beast by PRO xASSASSINx April 16, 2013

beast-pro-boner 

exceptionally awesome,
combination of 3 already well-used slang words

you stole a traffic cone? that's totally beast-pro-boner

beast-pro-boner by asdf+9874253 November 30, 2010