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."
When two gals with bootys competing in some way.
Could be shakin' booty to some music.
Or it could be a "booty-to-booty" battle if ya know what I mean.
The two booties have some contact like, bumpin, slamming, pressing and comparing each others booties together in a competitive way.
"A woman two another: lets compare our booties and have some "Battle of the booties" action."
"Lets shake our booties"
"Wanna have some booty fun together?"
"You can't beat my booty"
"Lets compare our booties"