The unpleasant, greasy-headed potions professor from the
Harry Potter series. He is a
major douche to Harry, mainly because he was madly in love with Harry's mother, but due to his own screw-up, she wound up hating him, loving his enemy, having a child with his enemy, then dying.
Basically, Snape is cranky because of his lack of a sex life, and Harry is a living reminder of the fact that his enemy had a sex life and he did not.
Snape-"Detention, Potter! And a hundred fifty thousand points from Gryffindor!"
Harry-"
You know what? You're jealous of my dead father, you so rarely
see the sun that your skin gives off its own glow, and you clearly haven't showered in a decade, because I could
literally wring a gallon of oil out of your hair. I honestly can't think of anything more pathetic."