An overly eager Yoon Si Yoon makes a pledge that scares all the '1 Night 2 Days' members

Yoon Si Yoonwas overflowing with energy and ambition on the May 1 broadcast of '1 Night 2 Days'!

Though the '1 Night 2 Days' crew were pleased to see that Yoon Si Yoon was so full of spirit, they were also a bit intimidated, especially at the actor's fearsome declaration.

Yoon Si Yoon had said, "Hello. I'm Yoon Si Yoon. As Kim Tak Goo, I achieved 50% in viewership ratings. Now it's time to do the same on variety. I will achieve a 50% viewership rating [on this show]." At the actor's speech, the members teased, "This guy is weird. We brought a weird guy on here." Not bothered at all by the quips, Yoon Si Yoon added, "We can do it. But only if we suffer," making all the members uncomfortable.

That's the spirit, Yoon Si Yoon!