On the December 17 airing of KBS 2TV's 'Happy Together 3', Yoo Jae Suk touched a variety of topics.

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When Jang Hang Joon said, "I can't live with someone like Yoo Jae Suk.  Don't you get stressed?" the nation's favorite MC replied, "I have no stress.  I have no severe stress."

When asked if he uses profanity, Yoo Jae Suk said, "Only with close friends."  Jo Se Ho stated, "I get the brunt of it.  This morning, I greeted him, and he told me, 'Yeah, f**** off.'"

Welp, it's nice to know he doesn't get stressed!