Hmm. Maybe that wasn't such a good idea after all.

Susannah Breslin is a guestblogger on Boing Boing. She is a freelance journalist who blogs at Reverse Cowgirl and is at work on a novel set in the adult movie industry.

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UFC fighter Frank Mir exhibits the unfortunate consequences of what happens when you step into the ring with six-foot-three, 265-pound human monster Brock Lesnar after last night's UFC 100 heavyweight bout.

If UFC 100 represents mainstream, the world has changed.

Brock Lesnar, the former World Wrestling Entertainment fighter and current UFC heavyweight champion, battered Frank Mir in a second-round knockout to set aside a festering year of bitterness.

With a likely million more watching on pay-per-view, Lesnar gave the 11,000-plus a doubly obscene hand gesture and stood firm as the disdain continued.

"Lesnar, St-Pierre claim victories at UFC 100." (Image credit: John Locher/Associated Press.)