Mariah Pranks Nick Cannon And Channing Tatum Takes A Bite Out Philly In Today's Tweet Dreams

Mariah Carey was up to no good this morning. The singer/actress tweeted to fans in the wee hours, "I'm up listening to my husband on his radio show in ny on 92.3 lmao! Big kiss to all up so early!!! I'm trying to stay up til NC gets home." Apparently she couldn't wait that long to see see her hubby, Nick Cannon, as he later posted, "My wife just prank called the station and started talking about porn on the air!! CLASSIC."

While Mariah may not have been calling in to promote anything, Channing Tatum was doing just that all day for his upcoming movie "Dear John". Channing stopped by the City of Brotherly Love and enjoyed a taste of the local cuisine, writing via his Twitter, "Yo tweeters in Philly doing press for Dear John. It's a little cold but three words philly cheese steak... Ballin!" "American Idol" fave Jason Castro also enjoyed some food on the road. He informed followers, "I just went throught the lunch line at haverford high school and found funnel cake!! Awesome!! Haha."

Check out what else celebs were up to today around the Twitterverse, including excitement over "How I Met Your Mother" getting renewed for a sixth season and some "Avatar" backlash! Don't forget you can follow us 24/7 @hollywoodcrush to get all the latest on your favorite stars!

@actuallynph Woo hoo!! Season Six is official! Now I can totally buy things and gamble lots and walk through the rest of Season Five!! Best news ever!!
-Neil Patrick Harris, Actor ("How I Met Your Mother")

@stephaniepratt Heading to the screening of VALENTINES DAY- so excited!!!!!!
-Stephanie Pratt, Reality Star ("The Hills")

@mtvdjpaulyd Send your girl a Valentines Day Card from yours truly !!!!!!!!! http://bit.ly/7NmwNM
-Pauly D, Reality Star ("Jersey Shore")

@ettejnahgaem I had a dream about Olivia Newton-John last night. What was playing on the radio on the way to work? "I'm hopelessly devoted to you.."!
-Meaghan Jette Martin, Actress ("10 Things I Hate About You," "Camp Rock")

@78violet In bed reading scripts with incense and candles lit:) a nice lazy day
-Aly Michalka, Singer, Actress ("Bandslam")

@thisisrobthomas everyday i wake up and say "i'm not going to work out today" then i taunt myself until i make it down to the gym.
-Rob Thomas, Musician

@ashleytisdale Gym! I'm so proud of myself, I'm not scared of the cycling bike anymore...I love it!!!!
-Ashley Tisdale, Singer, Actress ("High School Musical")

@danecook Never run up stairs with flip flops on.
-Dane Cook, Comedian, Actor ("Employee of the Month")

@ethansuplee Congratulations to Mr James Cameron for making the biggest movie on Earth...again.
-Ethan Suplee, Actor ("My Name is Earl")

@kevin_nealon Watched Avatar on my iPod. Don't know what the big deal is.
-Kevin Nealon, Comedian, Actor ("Aliens in the Attic")

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Tags Channing Tatum, Jason Castro, Mariah Carey, Nick Cannon, Tweet Dreams, Twitter