Discover the story behind CM Punk's unusual Pepsi tattoo and how it is apparently a reflection of his straight-edge beliefs and unique personality.

CM Punk is one of the most enigmatic characters in pro wrestling. One of his claims to fame is his "straight edge" lifestyle. In other words, he does not consume alcohol, drugs, or cigarettes.

A WWE star may be in trouble after his issues with CM Punk. He admitted to not liking him at all. Punk and Dominik Mysterio have taken shots at each other on several occasions, even recently.