Supposedly he just quoted Always Sunny which is put out by fox lol.
"This morning I’m on [Michael] Landsburg’s show, up here in Canada, and he hits me with the quote of what he tweeted," White explained. "Now there’s no explanation for that. There’s absolutely nothing I could say to make any sense of that. And the fact that he even thinks that’s funny or that’s a joke, it disturbs me. It bothers me. Again, you’re dealing with a guy that’s a smart guy, that owns his own business, that’s been one of the top fighters in the world forever. And I cut him today. He’s no longer with the UFC."
Contrast that to the silly excuses that he made for Forrest's rape joke and it doesn't make much sense.