If any active mixed martial arts (MMA) fighter is unsure of how to call someone out, may I introduce you to the incomparable Ultimate Fighting Championship (UFC) Lightweight Donald Cerrone.

The man knows his onions.

"Cowboy" will be trading leather with former teammate Melvin Guillard at the upcoming UFC 150: "Henderson vs. Edgar 2" pay-per-view (PPV) fight card from the Pepsi Center in Denver, Colorado, and if he successfully takes out "The Young Assassin," he already has his next opponent in mind.

Former World Extreme Cagefighting (WEC) Lightweight Champion Anthony Pettis.

Hear Cerrone break it all down for LowKick.com, as well as explain the "hell" he's going through (and why) after the jump.

"My training is going perfect. I stay ready so I can fight on any notice. This camp I trained in this time was at 9,000 feet because it has more altitude than Denver. Denver will feel easy compared to the hell I am going through now. It's in my blood. I don't back down from anybody and that naturally leads to entertaining fights. Anthony Pettis' bitch ass! Anthony, quit hiding behind your sore shoulder and come to the dance."

Pettis may have other ideas.

"Showtime," who was last seen disposing of Joe Lauzon at UFC 144, is the last man to defeat current UFC 155-pound champion Ben Henderson, when he stripped him of the division title under the WEC banner back in Dec. 2010. Now, he wants another crack at the "Smooth" one to prove their first go-round wasn't a fluke.

Just as soon as his shoulder heals.

Pettis is benched until October (at the earliest) after opting to have corrective shoulder surgery while Henderson settles his unfinished business with former division titleholder Frankie Edgar. After that?

Giddy up.

How about it Maniacs, you want Cerrone vs. Pettis -- or Pettis vs. Henderson?