On this week's installment of Yoo Jae Suk's YouTube talk show 'Just an Excuse', the MC reunited with his former 'Six Sense' co-stars, Jessi and Oh Na Ra!

Here, Yoo Jae Suk and his "younger sisters" spent time catching up, excitingly chatting over snacks typically found during festivals or outdoor events. 

Jessi, who recently joined Jay Park's label MORE VISION, revealed that she will be making a comeback very soon with a new single titled "GUM", dropping on October 25 at 6 PM KST. She revealed, "Since it's been a while since I released new music, and I'm also at a new label, I need to show a confidence performance. But the choreography for this song is so intense. It is all bootie. It is like a whole lower body workout. There is no break." 

When the topic of Jessi's comeback came up, Yoo Jae Suk stressed that his personal favorite song by Jessi was "What Type of X". He then asked if the new song had a similar vibe to "What Type of X", to which Jessi answered, "Not really. It is about how there are all types of flavors of chewing gum. It's a pretty simple song. The lyrics are easy and simple." 

The musician then gave a choreography spoiler (~ 24:41 mark), inviting Yoo Jae Suk to "twerk" along. You can watch this week's episode of 'Just An Excuse' featuring Jessi and Oh Na Ra, above!