CM Punk is a former WWE star who is training to make his UFC debut. That may not be sitting well with a segment of current UFC fighters, who believe that his fame is what's allowing him entry into their world of MMA.

That came to a head on Twitter yesterday, when current UFC fighter Cathal Pendred started what ended up turning into a complete shit storm by attacking the way Punk (Mr. Punk?) was working the pads.

We'd say that this was nothing more than classic WWE-style promotion, but remember, Pendred started all of this. It'll be interesting to see, however, who Punk ends up matched up with when he does finally step into the octagon for his first real fight.

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[via Wrestle Newz]