Rectal temps are still very, very real in the ER & Critical Care settings & also with young children. A rectal temp is a "real" temp, meaning that it is the most accurate way of getting a true reading on how high a patient's temp is. Oral, axillary or any other way is usually off by a degree or two, despite what the thermometer companies advertise. Sometimes I'll get an oral temp, on a patient, that is lower than what I suspect the actual temp to be. They feel warmer than the reading I got from the oral temp. So, I'll take a rectal temp.
During my 12 hr shift in the ER yesterday, most of the temps I took were rectally. That is the expected standard of practice in any hospital. Of course, that does not apply to everyone. If one has an elevated temp orally, in the ER, and has other significant medical problems or is unable to accurately hold a thermometer under one's tongue due to age (too old or too young) or mental status or is suspected to be septic, which very often the elderly are, a rectal temp is automatic. Of course, none of these patients either are aware that they are getting a rectal temp taken or are happy about it if they are aware. To tell the truth, having to turn a pt on their side, on your own, if assistance of a coworker is unavailable is a real & often back breaking chore. So...taking rectal temps, at least in the hospital settings I work in, is definitely not sexy, erotic or fun in any way. It is as automatic as taking one's blood pressure or doing any one of the countless other things we do for patients.
Of course, if a relatively healthy patient comes in with an injury or not feeling well & their medical history is that they are basically a "normal" healthy person, their temp will not be taken rectally. I suspect most here on this forum fall under that category of being a basically "normal" healthy person...at least in terms of whether or not they'd have their temp. taken rectally.