India, May 9 -- UFC President Dana White disclosed the most disrespectful celebrity he has encountered, labeling the infamous superstar as the "biggest douchebag ever."

During Tuesday's episode of The Katie Miller Podcast, White, 56, shared that the controversial hip-hop figure Sean "Diddy" Combs fell out of favor with him after reportedly unsettling his young niece when she requested a photograph at a charity event for children featuring celebrities.

"Oh, Diddy - 100 percent the biggest douchebag ever," he said when questioned about the most unpleasant celebrity he has ever met, further expressing his desire to "really f***ing stick it to whoever it was."

"Tony Hawk used to have these charity events, and when my kids were little, you'...