On December 16, Lee Kwang Soo and Ji Suk Jin appeared as guests on Yoo Jae Suk's very own YouTube content series, 'Just an Excuse (Pinggyego)'.

First, Yoo Jae Suk and Ji Suk Jin started off lightly(?) by criticizing Lee Kwang Soo's extravagant fashion, as the actor wore a stylish fur sweater and slick leather pants. 

The three stars then enjoyed a picnic in the park, snacking on tteok and yakgwa while chatting. Here, Ji Suk Jin asked Lee Kwang Soo, "Kwang Soo, what do you do when you're not working on a project?". Hearing this, Lee Kwang Soo answered, "I usually just stay at home. And I go to the gym."

Yoo Jae Suk, who attends the same gym as Lee Kwang Soo, pointed out, "Kwang Soo usually shows up in the afternoons. See, he can come earlier if he wants, but Kwang Soo purposely comes a little later because Gong Yoo tends to come around 3 PM." 

Lee Kwang Soo, however, denied the accusations(?) and remarked, "Why would I avoid Gong Yoo hyung? Each person works out on their own at the gym." 

Yoo Jae Suk then snuck in smugly, "But you see, Ji Cheol (Gong Yoo's real name) is my good friend." 

But Lee Kwang Soo had some accusations of his own against Yoo Jae Suk, as the actor revealed, "But when Jae Suk hyung is working out at the gym, and Lee Jung Jae hyung shows up, first he will greet [Lee Jung Jae] with a really lively conversation. And then, even though he only just started working out, he acts like he's done and goes home." 

Now, it was Yoo Jae Suk's turn to deny the accusations, refuting, "I went home because I was done working out!". 

Watch the full installment of this week's 'Just an Excuse (Pinggyego)' with Yoo Jae Suk, Ji Suk Jin, and Lee Kwang Soo, above!