On the February 3 installment of SBS's 'Roommate,' g.o.d's Park Joon Hyung took Jackson, Sunny, and Danny Ahn to the group's past dorm from 18 years ago, even revealing a hilarious story from their time there involving actress Song Hye Kyo!

Park Joon Hyung said, "At the time, I was filming for the sitcom, 'Soonpoong Clinic,' so [co-star] Song Hye Kyo came over," explaining that all the members saw someone coming from the window while they were only in their underwear!  When Park Joon Hyung told them it was Song Hye Kyo, they all freaked and quickly dressed themselves and fixed their hair to greet the pretty star. 

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You can check out the tour of the old dorm in the clip above.  He talks about Song Hye Kyo at the 2:40 mark, clearly having fun recalling the entertaining moment.