You greet her...

You answer the door a week later to find a short girl standing there. She has red hair, is about five feet tall, and has small tits which stand out against the very thin shirt she wears. With such small tits, she doesn't bother with a bra so you can see her nipples. She is wearing low-cut jeans that are very tight.
"Dina?" you ask the short girl.
She smiles, "Yup! Nice to meetcha!" She steps up to you and cups her small breasts through her shirt. "Like them? I think big tits get in the way of the real action, and you must think the same way!" She puts her hands on her hips and twirls a 360. Her cock, which sticks out of the top of her pants in the back, smacks your leg as she twirls. The thickness pushing apart her butt cheeks makes her ass look very nice in addition. You are still surprised at the size, even though it appears to be what you have ordered.
"Come in," you say after snapping out of your surprise. Dina follows you in and you shut the door. She is standing right behind you when you turn back.
"Too big for ya? Cuz you are gonna have to play with me either way!" Dina giggles.
"No, no...that's what I ordered. I'm tired of all the muscle aches twisting around to get a proper angle to use my toys. It's only mean girls who will use a strapon on a guy too...so...you were my last resort," you explain.
"Ah, I see." She turns around to show you her dick sticking out of the top of her jeans again. "You can touch it, you know? I want you to touch it. Ahhh...that's nice," she says as you touch the end of it. You rub your hands over the end, which is twice as big around as the soda can-sized shaft. You feel it twitch a few times, then start to stiffen at the end. You were aroused the first time you saw her, and now you are just flat-out horny. It only seems to stiffen past where it bends coming out of her jeans. You get lower to examine it. It feels like your cock and its proportions are like yours...just in a larger size. When the first bead of clear precum grows at her slit, you bend to lick it up. It tastes like a sweet pussy! You lick some more as you reach down to unzip your pants. You pull them and your boxers off.
"Zzzzziiiiip! That's what I wanted to hear! The way you are slobbering means I'm good to go!" Dina wants you to stick her dick up your butt, you surmise.
"Ok, strip down too," you tell her as you stand and pull off your shirt.
"It's OK. As long as you take my cum in your butt, there won't be a mess. I'll just stand like this, and you back onto my dick. We can bump butts as we buck at each other. That should be hot considering how nice and big and jiggly both of our asses are! So comon," Dina says and wiggles a bit for you. Her dick wobbles like an obscene tail.
"Hmm...if you want..." you say. This must be the adventurous part. You turn your back to her in order to position the huge cockhead at your asshole. You work it a little at a time. The bigger head is something you didn't plan for but should have; every cock has a head. You take a deep breath and decide on taking a bit of pain and push back hard in order to get the fat head in. It hurts a lot briefly, but you get it past the tight part and inside where it won't bother you. You slide the shaft in a bit at a time. It's only about a foot, but you take it slow. It feels satisfying. You can even feel the larger head as it leads the way deep inside of you. You travel down the shaft slowly in order to enjoy the thoughts and feelings of the long dick being more and more inside than out. You finally feel her butt on the back of your thighs. The height difference makes her original kinky plan impractical since your butt hits her back.
"Oh...I forgot...you are too tall to do it this way! I guess we can do it next time. You can just ride me and then we should be straight on then." This doesn't seem to stop her from bouncing her butt against your legs, so you respond by shimmying your butt against her back. "Ok, you said you were gonna take all my cum in your butt, right?" Dina looks over her shoulder at you with unfocused eyes.