back-to-back jacks

1. In baseball, when two consecutive batters each hit a home run.
2. The act is sitting back-to-back with someone, while giving each other reach-around manual stimulation.

1. "Dude, I went to the Orioles game last night and Roberts and Markakis hit back-to-back jacks!"
"What was the final score?"
"They lost 10-2."

2. Tom and Kevin had some drunken back-to-back jacks last night, claiming it's not gay if they can't see what they're doing

by Castrati July 25, 2011

back back

clear the way or get out of the way.

by Mr. Terrence L. Trezvant October 12, 2003

back back

A way of telling someone to back up, or move.

Whoa! Back back! Gimmie 50ft!

by abstrak8 March 14, 2005

The back back

The back back is the 2 seats in the back of a seven seat car

Your going to have to go in the back back

Can you pop up the seats from the back back

Can you help me get out of the back back

by FlyingTuna August 14, 2019

back to back technique

when a nigga make you cum multiple times in one or more positions

my man stay having me cum .. his back to back technique strong as fuck .

by camcam813 June 14, 2017

Back got Back

When an individual's ass is so flat it's like their back just keeps going.

He so flat, that back got back.

Her back got back.

by DarthXander May 2, 2020

Sack to Back or Sac to Back

Sack to back is the term used when two males ride a motorcycle or scooter together.
Also referred to as "Butts to Nuts"

Those guys are riding "Sack to Back or Sac to Back"

by Indetrucks March 4, 2011