Finger her ass a bit

You release Sandras balls from your githt grasp and move on to her ass. Your hand glides in between her buttcheeks and soon you find her anus. Sandra notices this.
"Exploring are we?"
Just as she finishes that sentence, you take her cock into your throat while shoving two fingers knuckle deep into her ass. She gasps at the combo and starts breathing heavier. Your fingers find her sweet spot and you start massaging it slowly but firmly. Sandra bucks her hips and grabs your head with both hands.
"Oh, you´re gonna make me cum like this!"
No sooner has the words left her mouth, then you feel her unload her cum in your mouth.