Eat her out.

Instead of answering, you kneel down between her legs, and lick at her shaven cunt, lapping up her juices, and sliding your tongue between her lips.

"Ohhh, god, that's right, lick my pussy!" moans Katy.

Mary starts rubbing herself faster, clearly turned on, as you start delving deeper, licking harder.

"Yessss... oh, don't stop!"

Within minutes, she can't take it anymore, and cums all over your face, while on her end, so does Mary, gushing a warm load.

"Fffuck!" Gasps Katy, "That was amazing! What do you want to do next?"