Seems like “playing doctor” never gets old. Neither does role-playing the firefighter who saves your life, the nurse who tends to a soldier’s wounds, and the police officer who rescues the “kidnapping” victim.

What is it about the “save me” theme that turns people on?

I once had a partner who was not only a pilot, but a former paramedic, firefighter and soon-to-be doctor. Talk about having your fantasies rolled into one! Needless to say, I was quite the envy of my friends on this one. People know the potential such job titles – real or feigned — hold for better sex.

Prince-on-a-white-horse sexual fantasies have endured the centuries. Novels, soap operas, flicks, and made-for-TV movies have further enamored us with “rescue me” storylines, where the character saving or healing a tragic victim is alluring in an amorous, take-me-now way ...

Most recently, however, we’ve seen people playing up the “woe is me – take care of me” component in these attractive scenarios. In Japan’s legendary fashion neighborhood, Harajuku, a sex fetish called “injured idol” garnered Internet attention.

Called “Kegadoru,” it involves healthy women wrapping bandages around their heads or other body parts to lure men. White bandages supposedly represent an “injured doll” with virginal grace. Black bandages indicate wickedness. Either way, some people find the look and the sex it promises enticing.

It would seem like an isolated “trend” if it weren’t for the popularity of “doctor” scenarios, in particular, or sex play. In these role-playing scenarios, lovers concoct a situation needing medical or clinical attention. In making the fantasy feel more real, efforts typically include medical uniforms and equipment, like seduction restraints.

Depending on your fancy, any intimate examination goes, with select online sex toy shops selling you everything needed for an up close and personal – safe and consensual – “check-up.”

Ranging from tame to hardcore, these medical scenes and toys, as they’re called, have been making headlines in publications ranging from The New Yorker to Penthouse, and in productions like Playboy’s Sexcetera. In her video “Teary Eyed,” Missy Elliot got in on the medical kink, donning a straitjacket along with her dancers.

So what is it about any of these “save me” sexual situations that gets us in the mood? Whether rescue me, examine me, or take care of me, these role-playing fantasies are sought out because...

They allow for hot spot play.

Caught up in their roles, lovers are given the perfect excuse to check out often taboo areas of the body or explore them as never before. How can he refuse the prostate “exam” from his hot-to-trot doctor? How can she not bend over to make sure that everything is A-OK down there?

They make you the focus of attention.

The firefighter, nurse practitioner or police officer is all about the individual in supposed distress. All the hero or heroine wants to do is make you feel better, and at any cost. Nothing else and no one else exists besides the one in need. Such an ego stroke is hard to resist.

They play up power dynamics.

Sometimes you like to be in charge. Other times you like to be dominated. These sexual role plays enable partners to take on either role and really get into calling the shots or telling you what to do and how to do it. Some people love that -- and either way, it’s super hot!

They tease to no end.

While sex can happen at some point, it’s the drama and the promise of more action that are the main events. Creating the story makes for most of the fun, including torturing the victim’s or patient’s erogenous zones or desire in wanting something more.

They are the unacceptable.

In fantasy land, your wildest dreams come true. Here you can ravage that bombshell nurse. Here you can beg the paramedic to do a whole lot more than save your life. Your dirtiest, nastiest, most salacious thoughts are now yours for the making.

They make you feel taken care of and needed.

No matter what your role, these fantasies tug at basic human emotional needs. We all want to be wanted. We like to know that we have somebody to rely upon through good and bad. The scenario being sexual is simply a bonus.

Dr. Yvonne K. Fulbright is a sex educator, relationship expert, columnist and founder of Sexuality Source Inc. She is the author of several books including, "Touch Me There! A Hands-On Guide to Your Orgasmic Hot Spots."

Click here to read more FoxSexpert columns.