Yoon Si Yoon's six pack abs draw the envy of Kim Jong Min

The crew were changing in the locker room for a mission, and when Yoon Si Yoon, who is a former marine, took his shirt off, the others couldn't help but stare in awe at his perfect six pack. Kim Jong Min in particular had difficulty tearing his eyes away as his own belly was shapeless and doughy-looking. 
 

Yoon Si Yoon, staring back at Kim Jong Min's belly, joked in a fascinated tone, "Now that I look at it, your stomach looks more square than round," making everyone, including Kim Jong Min, burst out in hearty laughter. 

That's right, Kim Jong Min, your stomach is unique!