Nick Wass/Associated Press
Bob Arum is one of the most well-known boxing promoters in history, but he's never learned to appreciate mixed martial arts.
The 88-year-old was asked for his opinion on the fellow combat sport Monday during Ariel Helwani's MMA Show (warning: NSFW language), and he didn't hold back.
"As far as I'm concerned, it's trash," Arum said. "I don't like it. I don't like to watch it."
Although he did credit UFC promoters for building a following, he noted he still personally doesn't like watching MMA.