Lubricate her rectum with your finger.

Melody's cries fade out as she becomes adjusted to the lubing. She loosens up again and you find it's easy to work your fingers around this way as she lies on her side. You can hear her breathe heavily into the pillow, but you try not to read into it. There can be many reasons her breathing is unusual, especially given the circumstances. You continue your work, slowly becoming aware of just how horny you are becoming. You lick your lips and wonder if you could get away with lubing the inside of her asshole as well.

"Okay, Melody," you say, trying to keep your voice steady and normal. "I'm going to put a little lube inside, too."

Melody puts her head up a little. "Are you sure?" she says. "For just a thermometer?"

"Yeah," you say. "This one is digital, so it's a little bigger than a mercury thermometer. It helps to have a little more lube."

"God, it feels like you've been giving me the complete treatment already," she says, laying her head back down. "Go ahead, let's get this over with."

You swallow. Ulp, she just said yes. Okay then. You feel your cock throb inside your pants.

"Just make sure you put the fingernail brush in hydrogen peroxide when you're done."

You glop a blob of lube onto the tip of your middle finger. With your index finger, you test Melody's anus. It's tight again, but with a few seconds of gentle, slow circles, it softens. You switch fingers and press with your middle finger. Slowly, slowly it enters, then suddenly slides in with little resistance. She's very warm inside.

"Eeep!" Melody says. Her entrance tightens down on your finger.

"Okay, Melody, that does it," you say. You think your voice is normal. You can feel your cheeks are warm, and you hope they don't look too red. You look at your finger entering Melody's asshole and try to commit the image to memory.

"Okay, you can take it out, then," she says.

"Um, you have to relax a little," you say.

"How do I do that?" she asks.

Fair question. "Um, deep breaths, I guess." You try and recall what else might help. "Let me rub just a little here." You bend back your index finger so your thumb can rub gently against Melody's tight ring, trying to soothe it open again. She sighs. A couple of tighter pulses make you wonder if you're making any progress at all, but she finally relaxes enough so you can slowly and smoothly remove your middle finger from her rectum. You hear a faint hiss and a wet smack from the lube as you withdraw.

Okay, enough fooling around. You can feel a small damp spot in your underwear, and your penis is still feeling bent out of shape in there.

"All right, I'm going to put the thermometer in now," you say. You press the button to zero the digital thermometer and touch the probe to Melody's asshole. With light pressure, it slides in smooth and slick. "Okay," you say.

You hope you haven't used too much lube.