The girls, Lily, Sarah, and Alex, had just finished an intense threesome when they decided to engage in a new challenge - swapping cum. They each took turns licking and swallowing each other's cum off their bodies, savoring the taste of their combined essence. As they swapped more cum, their hunger for pleasure grew, and they began to engage in various acts of depravity.
Sarah suggested they insert some of the cum into their asses using a glass dildo, which they did while fondling each other's clits. The sensation was overwhelmingly arousing, and they couldn't help but cum again. Alex proposed they take it a step further and use a metal dildo for deeper penetration, which they did without hesitation.
As each girl experienced their partner's cum inside them in a new way, they became increasingly aroused and eager to continue exploring their deep sexual desires together.