back-vag

When a persons ass crack is showing above the waist of their pants creating a vagina like crack on their backside.

Mike "Dude, that girl in front of us in economics totally had a back-vag going on."
Al "I know man. It was so hot."
Mike "Dude! She was 300 pounds at least!"
Al "I know."

by Adam Woodard December 14, 2008

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apple-backed

The act of shoving an apple down the back of someone's shirt, causing them to have an apple humped back.

Ahh man, I can't believe you just apple-backed me again!

by Golden Delicious The Second January 8, 2009

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back luck

The best possible luck ever, if you get back luck you are the luckiest person alive.

Send APUSH hw or have back luck for 12 days:

by anon3456281389 March 17, 2017

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Weak Back

A man who has a womens job. I.E. Lunchroom Lady

Mr. Fleenor is such a weak back, he's been serving in the cafeteria for the past six years.

by MrAllStarChris January 10, 2008

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Back-9

The second half and presumingly less attractive years in a woman's life.

Maddison was a hottie in 2001 but now she's on the back-9

by Fraz Von Hoffer May 18, 2016

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When your penis bends to incredible lengths before inevitably breaking and returning to it's neutral position, mangled and distorted. The name is given due to the snapping noise the penis makes as the muscles tear.

Bro, she was riding me yesterday, but she totally ruined it when she gave me a Snap-Back!

My boyfriend and I had rough, passionate, brutal, ball busting, jaw snapping, snap-backing anal sex yesterday.

by Richar Dick October 3, 2019

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