SHINee's Key and Kim Chung Ha made everyone laugh on 'Master Key' this week with their surprising performance during one of the games.

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Two teams faced off against each other in a game of skipping rope in which two members of each team had to work together while facing their partner. The white team took on the challenge first where Wanna One's Ong Seong Wu and LABOUM's Solbin hit a number of 82 that shocked everyone.

Afterward, Kim Chung Ha and Key stepped onto the plate to take on the difficult challenge. Before they started, however, Lee Soo Geun raised everyone's expectations that the two jumped over 100 times during the practice time. The two artists started but absolutely shocked and made the entire cast burst out into laughter with the staggering weak performance of 0.

Check out the funny clip above!