Top Definition
While in the doggy style position, a man attempts to slip their penis into the woman's asshole without permission.
My girlfriend got really mad when I tried to throw her a backdoor slider last night.
by downpat75 July 11, 2008

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When a man makes love to the crevice of a woman's butt by sliding his cock between her cheeks until he blows a romance explosion onto her back.
guy 1: "Dude I gave that bitch a backdoor slider last night!"
guy 2: "No way bro!"
by schneider9688 September 26, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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whenever you transition to da butt sex position or da doggy styles. usually renders a women unable to sit for 3 days.....
Will: Wow Burto...Chris really did work on her butt.

Burto: yea i hear that he gave Kiera the Back Door Slider...

Will: ROUGH!
by William Hake August 26, 2008

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt