SBSI
Acronym: Side-By-Side Insertion
A dude and his bro banging chicks next to each other.
A dude and his bro banging chicks next to each other.
Bro #1: Dude, wanna get some honeys and SBSI tonight?
Bro #2: Hell yeah, double the titties!
Bro #2: Hell yeah, double the titties!