Rain talked about an awkward moment that took place in a mixed-sex sauna.

On the February 16th episode of 'Knowing Brothers', Rain and Lee Bum Soo guested on the show to promote their latest film 'Uhm Bok Dong' together. During the episode, Rain told an interesting story from his trip to Northern Europe, when he visited a spa without knowing that it was a mixed-sex sauna.

"I was sitting alone, and these two naked ladies had come in. I had a towel, fortunately, so I immediately covered myself," said Rain.

"I was so shocked, but those ladies came and confidently sat next to me. I caught myself saying 'is this a women's spa?' in Korean under my breath and tried to leave the scene. But those two people told me, 'it's okay, come sit!'. So, without thinking, I shouted, 'I have a girlfriend!'. They probably thought I was being absurd," shared Rain.