The Back Nine 

A golf course that takes forever to complete.

I hate the back nine. 2.0 cogs galore, mazes that make no sense, and lots of bugs.

The Back Nine by anonymousclucker July 30, 2018

The back nine 

(AU/NZ) When you sink 9 cones in a row.

Hey bro, do you reckon we could finish the back nine?

The back nine by anonymous June 26, 2021

Playing The back nine

The act of engaging, after a solid regimen of vaginal sex, in the act of anal sex; also known as sodomy. One can also hop onto the back nine right away if possible. This phrase is a simile derived from the game of golf when one plays the last nine holes on an 18 hole golf course.

Me and my girlfriend were having great sex last night when all of a sudden we tried to switch it up and ended up "playing the back nine" wink* wink*.

Playing The back nine by TigersWood April 24, 2011

Play the back nine 

Anal sex with a woman.

Hey Suzy, put down that fucking iphone and bend over so I can play the back nine.

Who cares if you're on the rag? I'll just play the back nine.

Play the back nine by Rudiskranberry April 16, 2012

Play the back nine. 

Fuck a slut ass cunt whore in her ass.

After I busted in her stank ass pussy, I said bitch turn over, then I played the back nine.

Play the back nine. by Griz April 18, 2004