Suggest the rectal thermometer.

"Well, we do need to take your temperature and these things are the most accurate way of taking it." You say softly, as if musing out loud. Melody blots right up in bed, her eyes as wide as saucers.

"WHAT?!" She exclaims, her face red. "Are you honestly suggesting that I let you stick a thermometer up my ass?"

"No, I'm suggesting YOU try this method. I didn't say anything about me doing it." You respond, raising one eyebrow. Melody's face goes an even deeper shade of vermillion and she looks down at the covers.

"I didn't mean to say that! You just surprised me, that's all." She clears her throat and gulps. "Okay, I'll try this thermometer. It's so embarrassing though."

"Well, I'm going to go into the bathroom and wait there. You can call me in when you're done." You say. Melody nods and takes the thermometer from you. You bite your lip, unable to hold in the laughter as she looks at the box in horror. "Have fun. Just not too much fun."

"SHUT UP!" She yells at you in embarrassed anger. You laugh and dash into the bathroom, closing the door behind you. During one of your more candid and drunk talks, the two of you had swapped stories of sexual turn-ons. Melody had admitted to enjoying having her asshole played with and you can remember vividly how hard your cock had become listening to her talk about the things she would do by herself. It was a twisted thought, but part of you wondered if she would enjoy inserting a medical thermometer into her ass.

After a few minutes, you hear Melody let out a frustrated groan followed by a weak call out to you. "Jack?"

"What is it?" You reply.

"I...I..." Her voices falters and when it returns it's much softer than before. "I need help." You feel your throat go as dry as the desert. Help? She needed help?

"What kind of help?" You ask.

"Just get out here." She groans. You obediently exit the bathroom to find Melody still in bed, the covers pulled up to her shoulders. You notice her blue thong was lying on the floor now. She was holding the thermometer in one hand and looking away sheepishly. "I can't...I can't put it in."

"Why not?" You ask.

"I keep clenching my muscles. It hurts." She replies. You find that hard to believe. If she really has used her fingers like she drunkenly admitted to you, then the thermometer should be no problem. "I just feel too weak to get into a position I can easily insert it from."

"What do you want me to do?" You ask, nervously. Your entire body is twitching, especially your swelling member.

"Do I have to spell it out for you?" She mumbles. "Don't you get the picture?"

"I just want to make sure." You say quickly. You flash her a nervous smile. "I guess Nurse Jack is back on the job, eh?" Melody laughs along with you, but you can tell she's frightened under her guise of humor. To be honest, so are you. This was an odd situation you never thought you would be in. You try and clear your mind and think of this professionally and not personally. Don't think about the fact that this is Melody you're treating and that you're going to see her naked ass and you're going to be able to caress her soft skin before penetrating her ass slowly with...

NO! Professional, dammit! This is not the time to get horny! With some effort, you manage to hold back you libido just enough to decide what the best course of action would be.