Ric Flair LJ: A guy on my old rugby team was a huge wrestling fan when he was 7. To the point where he went to some airport in Tennessee when the WWF (I think. Might have been TNA) flew in. He had a sign for one of the good guy wrestlers and everything.
As the wrestlers are coming through arrivals, he sees Ric Flair and says "Boo, boo. You're a bad man, Ric Flair." Ric Flair looks at this 7 year old kid and says "I'mma fuck your momma, boy. WOOOOO!"
And that, ladies and gentlemen, is how to be a heel.