"Mc" Labeling

"Mc" Labeling is the trend on Grey's Anatomy where one adds "Mc" to words or sentences. Most commonly used are McDreamy and McSteamy.

Season 1

McBurney: The first of the trend used by another intern to describe the patient that George is performing on. (McBurney's Point is, however, an established medical term.) (A Hard Day's Night)

McDreamy - The nickname given to Derek Shepherd by Cristina Yang. (The First Cut Is the Deepest)

McMarried - Used by George O'Malley to describe Derek Shepherd's marital status. (Raindrops Keep Falling On My Head)

McWhat - said by Izzie after she found out that Derek was married. (Raindrops Keep Falling On My Head)

McBastard - a reference to Derek after Meredith found out that he was married (Raindrops Keep Falling On My Head)

McSteamy The name used by Tyler Christian when meaning to say McDreamy. (Into You Like a Train)

McDouchey - Cristina describing Derek Shepherd for not allowing her to scrub in on his surgery. (Tell Me Sweet Little Lies)

McDog - The dog shared by Derek and Meredith named Doc. (It's the End of the World)

McLife - the term used by Meredith to describe Addison Montgomery-Shepherd's influence over her life. Addison has Derek and now her dog. (It's the End of the World)

McSexy - a suggestion for a nickname for Mark Sloan when he first arrived to Seattle Grace by Meredith. (Yesterday)

McYummy - another suggestion for a nickname for Mark Sloan by Izzie. (Yesterday)

McSteamy - the nickname that Izzie, Meredith and Cristina agreed for Mark Sloan. (Yesterday)

McVomit - the term for George's disgust of the new nickname for Mark Sloan.(Yesterday)

McHot - used by Alex Karev to describe Addison Montgomery-Shepherd.(Yesterday)

McYeah - George's assertion with the term used to describe Addison. (Yesterday)

McDreamy - In this case, Izzie uses this nickname to describe George being the center of Callie's attraction. (The Name of the Game)

McGuilty - what Cristina calls Derek following his extramarital sex with Meredith at the prom that is being hosted in the hospital. (Time Has Come Today)
McBaby - what Cristina calls Meredith’s suspected pregnancy. (What I Am)
McNasty - George describing what Derek had allegedly done with the woman in his trailer. Unbeknownst to them, the woman was Derek's sister, Nancy. (Let the Angels Commit)
McHottie - George's term for Derek's sister, Nancy. (Let the Angels Commit)
McBastard - George labelling Derek, assuming that he was having sexual intercourse with the woman in his trailer.(Let the Angels Commit)
McBitchy - Izzie refers to Derek’s sister, Nancy, after she insinuates that Meredith is the reason for the Shepherds’ divorce. (Let the Angels Commit)
McFrickin' Code of Silence! Callie describing when she claimed Meredith's panties off the wall (From a Whisper to a Scream)
McSex - Callie’s reference to catching Meredith and Derek having sex at the prom.(From a Whisper to a Scream)
McLove Life - Cristina's reference to Meredith's relationships (Drowning on Dry Land)
McCrap - Cristina describing Meredith's problems.(Drowning on Dry Land)

McDreamied Cristina describing what Derek and Meredith do in the elevator (The Heart of the Matter)
McDreamy The name used by Norman when meaning to say McSteamy (The Heart of the Matter)
McSleazy Another name used by Norman when meaning to say McSteamy (The Heart of the Matter)
McRebound The nickname given to Rose by Addison after learning of Derek's new girlfriend. (Piece of My Heart)

McAss - Meredith calls Derek McAss, because she is mad at him. (I Like You So Much Better When You're Naked)

McDreamys - Callie tells Owen that she's rebounded to the McDreamys (I Bet It Stung)

George was Callie's McDreamy.
The first time we heard McSteamy was from Tyler Christian when he passed on a message from Joe to Meredith that Derek was looking for her (mixing up dreamy with steamy).