Smack those tits!

As much as her breasts are standing out, you want them to stand out more. So you fetch some thick rubber bands and, with some effort, folded them and pulled them apart, placing them around the base of her breasts.

Now that they are really jutting out you, you give her nipples a hard twist, making her shriek briefly. You smirked and then started to smack her tits side to side, enjoying her muffled protests and teary eyes.

You grabbed her hair and yanked her head back, making her look up at you as you smacked her breasts harder and harder. As her tears and drool ran down her face, her nipples swelled and turned a reddish pink along with her areola. Once you were satisfied that her tits had had enough, you gently kissed each breast and gently cupped them.
"Do you still want this?" You smirk. Surprisingly, she nods eagerly despite the tears running down her face...