It's about time we got this man on the show.  Song Jae Rim is pretty much the king of implicit (and sometimes explicit) 19+ remarks.

He appeared on JTBC's 'Witch Hunt' on July 3, transforming into a professor of the art of skin ship and love, also emphasizing what not to do so to avoid the 'sexual molester' label.  Shin Dong Yup said to him, "Since Song Jae Rim appeared on 'We Got Married,' he was famous as people knew him to be good at touching." 

Song Jae Rim said, "For skin ship, too, you need to touch well.  Seeing as how I often hang out with male friends, we talk comfortably and do skin ship.  That comfortableness gets translated to my girlfriend, too.  I end up being good at touch.  Moving is sexual harassment," perhaps saying that contact through touch is fine, but don't move your hands?

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A female participant relayed her concerns on the show about having only erotic thoughts when she looked at her boyfriend.  Song Jae Rim was asked by Shin Dong Yup if he had ever done skin ship at an unexpected location and by Yoo Se Yoon if he had never cared if other people saw him doing PDA.  He replied, "I'm shy, so I don't often do skin ship outside.  Since I lived away from my family at an early age, I never did that.  I don't think there's a need to show other people a precious memory with my girlfriend." Although he seemed to have no problem doing this on TV!  

He repeated there was no need to go looking for a random location to do skin ship because he had his own place from an early age.  He also said there were stages of skin ship, explaining that when the two were lying down, it was easy to get an arm in, but the next five seconds would be the hardest to make a move on her.