All was going swimmingly at the UFC 150 weigh-ins yesterday (Fri., Aug. 10, 2012) inside the Pepsi Center in Denver, Colorado. Fighters were stripping down, making weight, staring off and generally having a good time doing it.

Until Melvin Guillard damn near broke the scale.

"The Young Assassin" lost his battle with the bulge by just a pound and a half, weighing in at 157.5-pounds for his lightweight bout against Donald Cerrone, who came in right at the contracted 155-pounds (with a one pound cushion). Furthermore, it was revealed immediately after that Guillard would not attempt to cut the additional weight, instead opting to take a fine.

But why? Ariel Helwani got the word from the man himself:

I just spoke to Melvin Guillard. He said that at around noon his body stopped sweating once he reached 159 pounds. He immediately called Cerrone to tell him he would not be making weight, and he said Cerrone was cool with it. (In our interview for FUEL, Cerrone did seem cool with it.) He then called the UFC. He was told that since he took this fight on short notice he will still be eligible to win a bonus tomorrow night. Typically if you miss weight the UFC won't give you a Fight, Sub or KO of the Night bonus. Finally, he had to give the commission 10% of his purse and Cerrone another 10%. So 20% in total. Final weight: 157.5. Lightweight limit: 156.

The UFC also released a video detailing Guillard's struggle to make weight and you can watch the cranky butt kicker after the jump.