shacking up 

Couples who live together (often while having sex) and are not married.

You him and that girl are shacking up!

shacking up by bb* August 26, 2008

Shacking Up 

Regularly hitting the sheets with someone youare not dating OR casually moving in with someone you regularly hit the sheets with.

Living in sin.

Donna spends all her time over at Jim's house, they have been shacking up together ever since they hooked up on Fat Tuesday.

Shacking Up by Mona Madly July 22, 2008

Shacking Up 

Giving someone a blowjob. Named after the band the Shackletons because they suck so much.

"yeah, i was at the shackletons concert. but i was in the bathroom shacking up because it sucked so much"

Shacking Up by ShackletonHater April 14, 2010

shacking up 

Lyric used by Canadian musician Kristofer Lee Scott to paint a beautiful image in his song Betting It All on his EP Who Am I To You?.

"So help me beat the oooooodds. When everybody else eems to be shacking up. I'm taking a chance..." -Kristofer Lee Scott

shacking up by TheNgster April 7, 2019

Shmacking up 

when someone engages in informal sexual activity, including hooking up and/or oral

Person A: Are you going to that girl's house tonight?
Person B: Yeah bro.
Person A: You gonna Netflix and Chill?
Person B: No bro, we gonna go straight to shmacking up.

Shmacking up by BHPH November 9, 2018

sacking up 

When people grow balls and make the move to California!

Mark and Hurl are finally sacking up, and coming to California in September!

sacking up by Spoof720 December 9, 2008

shackin it up 

to have sex or get really comfortable with another person... usually of the opposite sex...

Koby wasn't just shackin it up with monika but with every other girl out there except for me cuz i dumped him!!!!

shackin it up by Koby's ex... same one as above June 26, 2003