Actor Shim Hyung Tak got the members of 'Infinity Challenge' scratching their heads in puzzlement at his odd, silly dance moves. 

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The actor, who took center stage during a part of the show, started singing something in what sounded like an alien language. Park Myung Soo could only look on at this spectacle with a dumfounded expression on his face, and HaHa, who was starting to become embarrassed watching Shim Hyung Tak dance, ran away to avert his eyes. The other members could laugh awkwardly as Shim Hyung Tak determinedly continued his moves. After the dance was over, the actor said in an embarrassed tone, "I'm sorry." 

The actor explained afterwards, "[The dance] is from 'Minions,' an animation I like." 

Check out Shim Hyung Tak's cute dance moves for yourself in the clip above!