It is kinda that it sounds like, booty-to-booty, it's the same as ass-to-ass, butt-to-butt etc...
When two women with big butts, put their booties together, like massaging, slamming, bumping, pressing thier booties together in "booty-to-booty" positions.
Their is lots of positions: sitting on a another booty booty-to-booty, standing back to back booty-to-booty, both bending over and standing booty-to-booty, both down on their knees adn backin' their booties together booty-to-booty.
It's all about fantasy, having fun.
Some women love doing this together and having some booty-to-booty contact, it could also being competitive and then like comparing their booties, it's bein called a "booty battle".
(Friends with booties having fun with them.)
*"Starting to rub thier buttocks together"
*"Feels good having your soft booty against mine"
(black and white booty.)
*"I love to play with white girls and nice booties."
*"My black booty is much better than that white"
*"Feel black-on-white skin-on-skin booty-to-booty"
*"She think she got a better booty than me!"
(sexually between two women.)
*"Doing some booty-to-booty before/during/after the sex."
*"Sensual massage booty-to-booty."
*"sitting on the other womans booty."
*"Resting while lie on the other womans back, back-to-back
*"Both getting aroused on the thought that their assholes are so close to each other."