Destiny Cruz has a unique birthday surprise for her stepsister Tana Waters - a live, pulsing cock presented by Milan. Tana, naked and eager, takes the gift hungrily, her mouth stretching around Milan's massive length. Destiny, watching with hungry eyes, can't help but join in, her hands guiding Tana's head as she sucks. The sisters share the cock, their bodies pressed together, before Tana straddles Milan, impaling herself on his length. Destiny's fingers find Tana's clit, rubbing in time with Milan's thrusts, as the sisters race towards a shared, taboo birthday orgasm.