rear its ugly head 

For something (usually not a physical object) to be brought up; usually in conversation or the acts of a superior.

The subject of the war in Iraq reared its ugly head again.

rear its ugly head by Kung-Fu Jesus April 14, 2004

rear naked poke 

Rear Naked Poke:
The act of having sex in the doggie style position then slapping the rear naked choke on your willing partner and choking them out completely, all the while you're still having sex with them even while they are out cold, continue having sex until they completely wake up again.
The "Rear Naked Poke" should only be attempted by willing partners trained in the ways of Brazilian Jiu-Jitsu.

She let me rear naked poke her, and like a champ she didn't even try to Tap Out. When she woke up she said "that shit was crazy, I liked it."

rear naked poke by Jimmy The Mutt February 19, 2008

rear eschelon motherfucker 

a term used by those in military situations on the FRONT lines of battle to describe those who AREN'T

"we have to risk our asses up in here on the front lines while those REAR ESCHELON MOTHERFUCKERS are back there chillin

rear eschelon motherfucker by big daddy mac rocket October 7, 2009

rear injection 

Anal sex

No rear injections for me, I'm exit only!

rear injection by Anon_69 January 3, 2011

Rear entry 

anal sex, up the bum, driving on the dirt track.

i've got a tatoo on my arse that says no rear entry, because im not gay.

Rear entry by krackpipe December 13, 2003

REAR GUNNER 

A very brave bloke who sat for hours in the rear gun turret of a WW2 bomber having the shit shot out of him by enemy fighters. It was lonely freezingly cold job with a high mortality rate.

A WW2 bomber had several defensive gun turrets, the rear one was the most vunerable to being hit by an enemy fighter's machine guns.

REAR GUNNER by TimB June 12, 2005

Rear Entry Position 1 

1. Also known by some as "doggy style" the rear entry position is fairly easy to assume. The woman gets either on her hands and knees or lays stomach first on the bed with her lover behind her. He is on his knees or sometimes his feet, and develops leverage by grasping on to her hips. Depending on preference the man's legs can be inside of the women's legs or outside of them. Couples may wish to have the woman's legs closer together because it creates more friction between the penis and vagina.

I like the doggy style!

Rear Entry Position 1 by Bud E Love May 16, 2003