EXO's Chanyeol, Kai, and Suho appeared on SBS radio program, 'Kim Chang Ryul's Old School,' on June 15.

When DJ Kim Chang Ryul asked, "What variety program do you want to go on?" Suho chose 'Infinity Challenge.'  The DJ followed up with, "Are you eyeing Kwanghee's position?" and he cleverly replied, "If Kwanghee were to go to the army..." making everyone laugh. Although Kwanghee just got that position, seems he already needs to keep an eye out for others coveting the spot!

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Also on this day, DJ Kim Chang Ryul asked, "If there had been a funny episode while you were in Taiwan, please tell us."  The members burst into laughter and revealed they had done a hidden camera trick on their leader.

Kai said, "Sehun and I were talking, and we heard that Suho was getting a massage. When asked who wanted to do [the trick], everybody stood up," revealing the members, manager, and guards all worked together to tie Suho to the bed.  Whoa.

Suho said here, "At first, only the members were doing it, so I could shake them off, but after, about eight of our secret guards came, so I was unable to shake them off," making everyone laugh.