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".

The Back Half by Eug February 10, 2005

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!!!!!

The back half by Nice meeting ya October 17, 2014

Get on the back half of that motherfucker 

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.

Get on the back half of that motherfucker by Therterkerjerbs December 27, 2023