All of the above

Looking at Rachel’s glorious bubble butt as it wiggles uncontrollably thanks to what you’re doing to her, the thought occurs to you that if you want to fuck her ass, you’ll have to get it wet enough to be able to accept your cock first. And judging from what happened by the pool earlier today, you won’t be able to lick or finger it for very long before she’ll cum anyway. Besides, you realise, you genuinely love making Rachel cum, so why hold back?
It’s with that question racing through your head that you switch the vibrator off and begin to extract it from her juicing snatch.

“Trust me, honey, you’ll enjoy this,” You promise Rachel when she looks back at you after releasing a moan of disappointment at the fake cock being extracted from her vividly pink little pussy.

Dropping the vibrator on the bed, where it starts soaking the sheets, you grab hold of Rachel’s narrow waist and position yourself so that the crown of your cock is pressing against her sex. The look on Rachel’s face as she waits for you to plunge your dick inside her is such that it nearly makes you forget all about what you’ve planned and instead proceed to plough her drenched honeypot. But you manage to get a hold of yourself and stick to your plan, which currently involves you gently pushing your cock inside her. Like always, Rachel’s pussy is tight and warm around your cock, and your treatment of it means that it’s so soaking wet that a loud squelching noise is heard when you slowly push inside her and have your member become coated with her juices.
A few more slow thrusts of your hips, and Rachel seems like she’s extremely close to cumming again as you pull back until your cockhead slips back into the open. Looking down, you note with satisfaction that the first two thirds of your cock is now glistening wet with her juices.

“Rachel,” you say when she looks at you again as you use your left hand to caress her slit while your right one searches for the vibrator, “Like I said, trust me…”

“O-okay,” Rachel nods her head at you as you admire the flustered state of her cheeks, then the way in which her eyelashes flutter and her lips pucker up when you bring the vibrator up against her pussy again.

You slide the vibrator back inside Rachel’s sex again, noting once more how her wetness is seeping down the inside of her thighs, before flicking it back onto the lowest setting and leaving it to hum as it’s buried beyond Rachel’s swollen, darkened pussy lips.

“John!” Rachel cries out as her body twitches in front of you. She’s extremely close to cumming now, as you place your hands on her asscheeks and pry them apart to fully expose her teeny bunghole. Running your tongue over your lips, you lean in closer and closer, keeping your hands on her buttocks until your tongue comes slipping out of your mouth and its tip connects with the puckered shape of Rachel’s anus.

“John! You nasty fucking stud!” Rachel screams when you start running your tongue over her ringpiece, this added bit of stimulation pushing her over the edge. You’re happy that she’s not hiding her face in the pillow anymore, but is screaming out into the open as she pushes her juicy ass closer to your face while the rest of her body tenses up, then begins to tremble as you hear the sound of her cum shooting onto the bed and her stomach alike.
Letting go of her left buttock, which duly slips in closer against your left cheek, you reach in around Rachel’s hip and grab hold of her cock, jerking it and pushing it up against her midsection as jizz continues to be pumped out of it, using your grip of her member to prolong her orgasm for as long as possible while your tongue continues its **** on her tightest hole and the dildo keeps vibrating inside her snatch.

When Rachel’s finished shooting out spunk and her dick begins to soften, you let go of it and move your hand to her pussy, turning off the vibrator. You do not however let your tongue move away from her asshole, but instead become more daring, even pushing it beyond her sphincter in an act that causes Rachel to let out a girlish yelp before she presses her ass tighter against your face.

As you continue licking Rachel’s ass, the moans that she’s producing start to rise in volume, from the faint ones coming from her when she’d finished blowing her load to something much louder and lusty as she squirms against your face.
Again your left hand reaches round for her cock, and as you touch it you feel that its growing rigid again. Giving it a few pumps of your wrists, which makes Rachel first coo and then giggle, you let go of it and bring your face away from her bunghole.

“So, are you ready for this?” You ask Rachel as you now sit behind her, having positioned your cockhead so it’s pressing against her backdoor.
In response, Rachel purrs and reaches in between her legs.

“Naughty slut!” You happily exclaim at the sound of the vibrator starting to hum inside her pussy again.
The only question now is if you’ll fuck her ass nice and slow, or hard and fast.