I don't know if it's been done before but... Either write a songfic or a fic based on it.
Here are the Lyrics:
Why do they think up stories that link my name with yours?
Why do the neighbors chatter all day, behind their doors?
I know a way to prove what they say is quite untrue. Here is the gist, a practical list of "don'ts" for you. Don't throw bouquets at me Don't please my folks too much Don't laugh at my jokes too much People will say we're in love! Don't sigh and gaze at me Your sighs are so like mine Your eyes mustn't glow like mine People will say we're in love! Don't start collecting things Give me my rose and my glove. Sweetheart they're suspecting things People will say we're in love.
Some people claim that you are to blame as much as I. Why do y' take the trouble to bake my favorite pie? Grantin' your wish, I carved our initials on that tree. Jist keep a slice of all the advice you give so free. Don't praise my charm too much Don't look so vain with me Don't stand in the rain with me People will say we're in love! Don't take my arm too much Don't keep your hand in mine Your hand feels so grand in mine People will say we're in love! Don't dance all night with me Till the stars fade from above. They'll see it's alright with me People will say we're in love.
"I should have made my meaning plainer," said Professor McGonagall, turning at last to look at Umbridge directly in the eyes. "He has achieved high marks in all Defense Against the Dark Arts tests set by a competent teacher."