New dad Cannon back at work with comedy special

Moroccan and Monroe Cannon better watch out — soon, they’re likely to find their way into dad Nick Cannon’s standup comedy routine. Their mother, Mariah Carey, is already the subject of one bit in Cannon’s new comedy special, “Mr. Showbiz,” which debuts Saturday on Showtime. The 30-year-old entertainer, whose resume includes everything from being a morning talk-show host to chairman of TeenNick, also pokes fun at himself, including all those potshots he gets in the tabloids and on blogs.