Apparently Tony An once had a rather strange drinking habit, and this quirk led his fellow former group member Lee Jae Won to punch him in the face!

Before you all jump to conclusions, you have to understand Tony An was asking for it - literally. On 'Radio Star', Lee Jae Won was asked about the troublemaker of H.O.T. He started by saying, "I'm sorry to Tony hyung, but... There was a time period where Tony hyung would ask people to hit him when he would drink... Tony hyung is feminine normally, but when he gets drunk, he gets all macho."

Lee Jae Won didn't actually follow through with Tony's request then, but Tony asked again another time. Lee Jae Won said, "He did it again on my birthday. Since he asked on my birthday, I sort of wanted to try it. I wondered how it would feel to hit someone else, so I hit him really hard in the face. He fell over backwards, but then he got up, and tried to nonchalantly brush it off as he said, 'It that all you've got?', and left without hitting me back, acting coolly."