'SNL' Promos: Louis C.K. Addresses Mystery Behind the 'C.K.' (Video)

Kenan Thompson attempts to get to the bottom of the mystery in new promos touting Louis C.K.'s return.
Dana Edelson/NBC

What does the "C.K." stand for in Louis C.K.?

Since the Louie star returns to the Saturday Night Live stage this weekend, Kenan Thompson took the opportunity to ask Louis C.K. that very question. After receiving a rather mundane response, Thompson whispered his previous (possibly obscene) guess in C.K.'s ear. Thompson: "What? You look like the type of guy who would do that!" Louis C.K.: "What's wrong with you?! Why would you …?"

STORY: Seth Rogen, Anna Kendrick and Pharrell Set for 'SNL'

U.K. singer-songwriter Sam Smith, whose hits include "Money on My Mind," "Lay Me Down" and "Stay With Me," is the musical guest this weekend.

Saturday Night Live airs Saturdays at 11:30 p.m. ET/PT.

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