Nickname for Grey's Anatomy character Mark Sloan. Dr. Sloan is played by none other than Eric Dane.
His character first broke up a marriage between Derek and Addison with a one-night-stand with Addison, which turned out to actually be a month long affair. He still has a thing for Addison, and Derek barely speaks to him. Oh yeah, and he hooked up with Callie!
And yet...a well-deserved nickname, did anybody else see that shower scene, the infamous towel?!
"McSexy," "nooo," "McYummy," "noope," definatley "McSteamy!"