On the November 27 airing of 'Sketchbook,' 'Dynamic Duo was one of the guests for the episode's hip hop special!�

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After their performance was over, MC Yoo Hee Yeol complimented Gaeko on his noticeably changed appearance, noting in particular the new hair on what used to be his completely bald head. He made a wisecrack, "You look less shiny than before."�

Gaeko joked back, "During our showcase, my friend who MC'ed said 'my hair has become richly luscious,' and I thought now is the perfect time to reveal [what I got done]," much to the amusement of the audience members and Yoo Hee Yeol alike.�

When Yoo Hee Yeol suddenly turned serious and asked them the deeply reflective question of what they mean to each other, Choiza gave a poetic answer that went, "When I've fallen to life's pit, he's a friend who's there when I turn my head." Gaeko, on the other hand, replied with a curious, "Choiza is a really big person," making everyone burst out into laughter at his ambiguous statement.

Check out their performances on the show below!�