On the July 25th episode of MBC's 'Radio Star', Super Junior member and host Kyuhyun asked guest Psy about his trademark armpit sweat marks.

Trying not-so-subtly to get Psy to lift up his arms, Kyuhyun led by example by lifting up his own. This revealed two small spots on the underarm areas of Kyuhyun's shirt, leading Psy to remark, "[I see that] you have them too."

At this, the 'Radio Star' cast began to playfully banter, asking Psy, "Is it possible to spout sweat?" and "Can you force sweat like actors force tears?"

Embarrassed but trying to remain calm, Psy began to say, "As you know, my singing career hasn't been so easy.�I've had many times of distress throughout my 12 years as a singer, but I began living a daunting life after the armpit thing."

According to Psy, he felt the scrutinizing gazes of other people focusing on his armpits, causing him to develop a habit of keeping his arms tightly close to his body. However, the heat from keeping his arms close to his body would only cause him to sweat even more.

The guests then continued to tease him by pointing out that his underarms began to sweat again, and Psy looked overcome with fear, just as he had confessed. The others then tried to force his arms away from his body, and Psy who detested the situation at hand evoked laughter by saying, "Don't touch me, I don't want to!"

Other guests who featured in this episode include Bobby Kim and Park Jung Hyun.

Source: TV Report via Nate