Honestly, we don't blame Claudinei Angelo. During his fight with Evilasio Silva, Angelo spat his mouthpiece out after taking a couple of punches from Silva. When the referee opted to not stop the match even though he was without his mouthpiece, Angelo asked for a timeout and just left the Octagon. We would've done the exact same thing and probably add an "eff this!" as we made our way out. 

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[via Bleacher Report]