Quote from Joey in The One with Mac and C.H.E.E.S.E.
Chandler: So, what's this thing you're auditioning for? Joey: It's a new TV show. Yeah. I'm up for the part of Mac, Machiavelli, or "Mac"! Yeah, I'm a detective and I solve crimes with the help of my robot partner. He's a computerized humanoid electronically enhanced, secret enforcer. Or, "C.H.E.E.S.E." Rachel: So, Mac and C.H.E.E.S.E.? Joey: That's the title! You know, they really lucked out that the initials spell "cheese." Chandler: That is lucky.