Back door

Someone being fake, or a snake towards you. Not loyal .

“Kayla back doored me to her friends”.

big back bucket

a huge container filled with all types of candy and snacks that all big backs would love.

Bring some Sour Patch Kids or Nerds to fill up our big back bucket!

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ballsack back

the immense feeling of pain in your lower back that remains for what feels like hours after hurting ur balls

"Hey, dude! Wanna play some golf with me?"
"Sorry. My ballsack back is so bad I can't even walk."

Cyborg Back

When your back has gotten so hard and tight that it’s not even human anymore

My back is so messed up from my restaurant job that I have cyborg back!

Boston style back shot

The sexual act of fucking a girl in the ass the cumming on her back and forming the Red Sox logo out of your cum

I gave this broad the Boston style back shot

lower back fat

A middle aged man or women that has lower back fat. Generally of average weight but our of shape. Fat collects in their lower back.

Please stop gripping my lower back fat (lbf).

hit-it-from-the-back

I cry into your arms while you play with my hair and tell me you’re proud of me.

“I hit-it-from-the-back last night bro, that shit was epic.”

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