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techinically, its a bimolecular substitution reaction in which a nucleophile replaces a good leaving group. It is also known as a backside attack.
this is, for example, how we can form butanol from bromobutane and HBr that was made insitu (using H2SO4 and NaBr) ((yeah dipset orgo lab...BALLL.ER)) more commonly, however, it is used to desribe what happens when studying for a final that comes back just to rape you. Hence the backside attack.
OMG. I'm so sore!! Maitland's final totes just SN2-ed my ass. I swear, I got it like a chiral carbon, and no, i do not have four orifices. (((OMGZZZ inapprorpriate)))

dedicated to my ORGO BALLLLLLLERS
sn2 by ORGO BALLERSSS January 6, 2008
Words you can keep

SN2 Master 

It is a reaction where two molecules initiate a backside attack in order to react. Because of its nature, it is used by chemistry students as a joke, implying sodomy or a person that enjoys giving/receiving a "backside attack."
Guy 1:"Hey, are you a SN2 master?"

Guy 2:"Yeah. It's not hard once you get the hang of it."

Guy 1:"I didn't know you roll that way."
SN2 Master by chemguynotchemgod July 31, 2009
Related Words
SN2707 by Faghagboy October 19, 2022
More from Urban Dictionary
Acronym, meaning Too Long Didn't Understand
Similar to TLDR
Sister: This meeting was to discuss the rough draft of my essay, where we discussed the subsidiary questions I added in my rough draft. We also discussed the relationship between my main title and the real-life situations I chose to use in my essay. We discussed the structure of my essay as well, specifically the Math AOK section and how it relates to the contradiction of the title. This second meeting was particularly helpful in discussing the implications of my essay claims and how to apply the title across various areas of knowledge. There were many sections of the essay that could have been cut down in wordiness and the ways of knowing required further and more in-depth analysis.

Me: Woah! TLDU!
TLDU by L-Evans January 14, 2019
Word of the Day on August 30, 2026
the act of having anonymous sexual encounters with other men in public toilets.
Cottaging by greeef April 24, 2003
Word of the Day on August 29, 2026

Salad Days 

green inexperienced youthful judgement and cold blooded execution of those judgements.

Rashness with little concern of consequence.

Antony and Cleopatra. William Shakespeare

"My salad days,
When I was green in judgment, cold in blood."

- William Shakespeare, Antony and Cleopatra, 1.5
"How did you end up in jail?"

"Salad days, 'nuf said."
Salad Days by GilbyRFC0 October 7, 2011
Word of the Day on August 28, 2026

age gate 

An absolutely foolproof way to keep minors from viewing content deemed "too mature" for them to watch.
Billy: "So I was trying to watch some videos for an M rated game, and I ran into an age gate, so I put in my real birthday. SOMEHOW it managed to figure out that I am 12. CURSE YOU AGE GATE!!!"

Bill: "Fucking age gate! *quick scroll* THERE! I was born on January 1, 1904. Fuck you age gate."
age gate by Banja January 7, 2011
Word of the Day on August 27, 2026

board chow 

A)
The Crud that collects under the keys in a keyboard. Usually more severe in the keyboards of programmers and webmasters as they tend to spend a lot of time at the the computer and thus eat at their desk. Mainly affecting IBM Model M (clicly) style boards.

B)
Can also be used to gross out Non-Techie people
A)
Bill: want to go to the club?
Bob: No, I've got to clean out my board chow, keys are starting to stick.

B)
Bill: Want to go out to get a bite?
Bob: No, i am just going to have some of my board chow/
Bill: Whats' that?
Bob: The food scraps that collect in my keyboard; Want some?
Bill: *GAG* *HURL* *GAG*
board chow by BinaryHackerMan September 3, 2007
Word of the Day on August 26, 2026

young pup 

a young person, a young adult in their late teens/early 20s.
Ah, you're just a young pup at 23!
young pup by the dog May 30, 2006
Word of the Day on August 25, 2026
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