Used as an abbreviation of 'Come On You Reds', for various football teams in the UK, such as Manchester United, or Southampton FC.

Also, less commonly, used to mean 'Come On You Rangers', specifically for Queen's Park Rangers.

Used, generally speaking, only in written communication.

"Come On You Reds" a chant in football for the team Swindon Town fc

Come On You R's - Used by fans of Queens Park Rangers F.C

Coyr meaning "Come on you Reds". Used by Aberdeen Fc, Scotland's greatest football club..

Meaning "Come On You Rams!" Used by Derby County fans.