Small nuggets of poop that are about the size of a small grape, and that usually come out one at a time. Named so due to their round shape and small size.
"Ayo some dumb fuck left backside beans in the urinal! What the actual f-"

"Honey! Someone left backside beans on our porch... AGAIN..."
by Suckmytoes_77 August 17, 2021
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Proper: A chemistry term used to describe the transfer of electrons and subsequent bonding of a neucleophile to the back face of a molecule. The back side described is the chiral center, with subsistents in a tetrahedral formation facing away from the nucleophile. Once the backside attack is complete, the stereochemistry of the molecule is inverted.

chem eng slang: A difficult academic situation. It is often used to describe the difficulty of an assignment or a test. Synonymous with ass rape.
"Oh shit, that exam was a total backside attack!"
by Electrick March 16, 2006
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1) The SN2 mechanism in which the nucleophile attacks the alpha carbon from a direction directly opposite to the C-LG bond. Results in inversion of stereochemical configuration.

2) When attacking a loved one from the back side
1) Wow that strong nucleophile caused one hell of a backside attack.

2) John: dude i went for the back side attack last night
Joe: Howd it go
John: Lets not go there.....
by morty foster October 25, 2007
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A girl who you assume has a pretty face by how her posterior(backside) looked but end up losing interest when you sees her face/front.
"I saw a backside cutie today with one tits and a troll face! Wut's wrong with me!"
by Stephen Yuan May 16, 2007
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Taking advantage of any situation in which you are either taken by surprise or you take someone by surprise.
I had a backside ron done on me when my wallet was stolen without me noticing.

When you are doing someone doggy style and you stick it in a bad place un announced.
by Johnson Streaker July 21, 2009
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A sexual position often leveraged when available space does not allow for a typical "North-South" thrusting motion from behind. The BT receiver moves vigorously in an "East-West" motion while the giver remains steadfastly inserted, thereby enabling intense gratification for both parties. Airline restrooms and small shower stalls lend themselves well to BT.
Wanna join the mile high club? I do but there's barely enough room for both of us in there, it'll never work. Plenty of space backside turbulence.
by Orekansas November 15, 2021
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skateboard maneuver in which the rider performs a kickflip and a backside 180 rotation
oh man, theotis has backside flips on lock.
by himey ho February 25, 2014
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