Actor Kwak Dong Yeon has cut his tongue on stage. 

On the March 6th airing of MBC's 'Radio Star,' Kwak Dong Yeon revealed that he once performed on stage with his tongue cut. 

He explained, "I continued acting with 1/3 of my tongue being slit. Two years ago, I was in a play for the first time, and I (briefly) fainted from hyperventilation. I fell with my tongue between my teeth." 

Kwak Dong Yeon continued, "I didn't know I fainted. When I reopened my eyes, I was in the middle of the stage and there was blood running. I couldn't grasp the situation but the show went on, and that performance was named my best."