Eat her out until she tells you what it is

Prying yourself from her arms, you start to slide down her body, leaving small kisses on her skin whenever you stop moving. "What are you- oh!" she exclaims, as right as she was about to ask what you're doing, you reach the opening of her pussy, still mostly full of your semen, and plant a kiss directly next to her labia.

"I'm going to eat you out until you tell me what it is." You possibly shouldn't have told her your plan, but it didn't exactly cross your mind to keep it a secret, and her reply is swallowed up by a moan as your tongue snakes out, tracing a small circle around her clit.

"Mmph... uh... if... if you make me... MMMph... if you get me to cum again, I'll... oh, yes... I'll tell you." Her voice floats over her body, punctuated by moans of pleasure, as you begin your job of licking your own cum from her sex. You make long, slow motions, swallowing down small bits of semen, the salty taste not even crossing your mind as her moans fill your ears. Bringing down a hand, you use your index finger to start tracing small circles around her clit, keeping with the rhythm of your tongue as it slides across the walls of her labia.

You can't help but feel aroused yourself, and pretty soon your cock is erect again, pressing against the sheets of the bed. Still, you do your best to ignore it, and steadily speed up as much as possible, until Alicia is practically shaking with pleasure. Deciding its time for the knockout blow, you move upwards and in one swift motion, flick her clit with your tongue. Her body starts to shudder, a screaming yell of pleasure escaping from her lips, as she's driven to another orgasm, her pussy pushing out some of your cum to start leaking its own juices as well.

Climbing back up the bed to lie alongside your lover, you take one of her pert breasts in your hand, gently squeezing it as you talk. "So, what is this 'ritual?'"

Still gasping for breath, it's a few seconds before Alicia can compose herself, and with a short giggle she answers. "Whenever we have sex in this room, it's customary for the two- or more- participants to run out into the lake, still naked. If you want to, we can... or we can deal with that." As her words end, her gaze drops, staring blatantly at your erect cock.