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."
by 123squanto February 16, 2011
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When someone becomes super petty and dickish after being rejected
lily: he totally snaped out on me after I rejected him.
by Genuinelyhatesnape August 23, 2017
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An interjection used and preceded by "oh". Usually used after an offensive point has been made.
Oh Snape son, that fool just offended yo ass.

Snape, that was totally off the chain my homie.
by danklewankle May 27, 2007
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The guy with the voice that sounds like he is gargling marbles while making out with a porpoise inside of a bucket.
Man, that Snape guy has a terrible voice, what a fucking annoying way of communicating.
by gsten August 16, 2010
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The space between the balls and the butthole, also known as the gooch, grundle, bonch, chode, or taint
Damn, my snape is itching like a bitch!
by Heather626 May 23, 2007
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Similar to the phenomenon known as vaping (created by Chinese pharmacist Hon Lik), this is a movement where Hogwarts enthusiasts are addicted to concocting assorted potions in honor of the late Professor Severus Snape.
Adam: Hey, did you see that new potion store that opened up just around the corner? It's right across the street from the Lebanese bakery.
Anita: Yeah, it's great! Now we can keep Snaping all day long while eating knafeh.
by pseudohumorcerebri August 26, 2016
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Killing someone to deceive your dark Overlord into believing that you are their right hand man.
"Wow! I can't believe he Snape killed his best friend, just to deceive the king. He's a true spy!"
by POPY248 January 24, 2016
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