You resist

You try to break free from your aunts grip, but your hands quickly find themselves pinned on the mat. "If thats what you really want..." Rosie says casually before bouncing the back of your head off the mat using her imposing bust. A second time her breasts smash your head down and you feel your strength fade.

Rosie picks up the pace and starts shimmying her chest, slapping your face with her surprisingly heavy tits. The strikes don't hurt too bad, but her weight is enough to bounce your head against the mat. Each time her giant boobs smack you, you feel weaker and more sexually frustrated, soon its impossible to hide your erection.

Once your dick starts getting hard it brushes against your aunts inner thigh, and she quickly shifts her hips down to bend your manhood awkwardly with her crotch. It's all becoming too much for you to handle.

You lift your head, trying to relieve the pain in your groin, when it happens. Rosies big, fat tits swing forcefully against your face and bashes the back of your head to the mat for the last time.

You've been knocked out cold, by your Aunties boobs.