Back's in half

Excruciating pain in the back after injury.

Typically used in Wales.
Fuck me Dan, I can't believe I just done deads for 120KG. MY BACK'S IN HALF!

Christ mate, I just rolled out of bed and MY BACK'S IN HALF!
by Odlatac March 07, 2018
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The Back Half

When a man with a huge penis is fucking a girl with a small vagina, the girl says to only put half in. The man then slams the whole lot in real hard.
She - "Only put half in"
He slams the lot in and she cries out in pain.
She - "You said only half, you said only half"
He - "Yeah - the back half Bitch".
by Eug February 11, 2005
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Embracing an unmissable opportunity such as how a Munted Gunty may feel the need to take a massive dildo all the way down to the base, i.e. the back half.
"Get on the back half of that motherfucker" said Dick Rangah when he realised that the petrol at the local servo was on special.

Or.....

Tom Cruise was so horny for some ass action that when John Travolta walked past he couldn't resist getting on the back half of that motherfucker.
by Therterkerjerbs December 28, 2023
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The back half

To give her every inch of your man meat

THE FUCKING BACK HALF
Girl.. That's really big I'm not sure about anal
Guy.. I'm only gunna put in half
Girl.. Ok
As guy enters he slams the whole thing in and says THE BACK HALF!!!!!
by Nice meeting ya October 17, 2014
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