*points a shaking finger* Muh...
*sigh* I suppose I should translate for those who don't know Shannon-speak. In Shannon-speak, "muh" has multiple meanings. It can mean, "Oh, my God. It's Harm/Mac/AJ." It can mean, "Holy shit, that's hot!" It can also mean, "I think I love this author."
But mostly, it means that Shannon's been stunned speechless. Which is pretty difficult to do. Usually, she can at least rant angrily or gush like a fangirl.