You may have an ambient temperature sensor that has gone bad. I'm not sure what kind of vehicle you have, so I don't know what system your vehicle has. But that will give you a good start.
Try unplugging and replugging in the sensor. If you recently had your air conditioned serviced it may not read correctly.
Playing video games, reading a book, looking outside, staying up late. Or, in the scientific definition, the eyelids being opened too long.
You obtain it by staying in a pool too long or by staying outside too long
In general, dogs are fine up until about 80 degrees F - they can compensate for the increased temperature through panting and staying in the shade. However, above 80 degrees they will need to actively work to maintain a normal body temperature and you will start to notice their retreat to cool places, drinking more water, panting heavily, etc.
it is when your eyes wonder to the outside instead of staying straight.
by staying outside for a very long time
In a way it would be possible for a dog to get rabies from staying outside, if it gets bitten by a rabid animal. Rabies is almost exclusively transmitted through saliva from the bite of an infected animal.
staying awake in class and reading your course materials
A temperature of 38 degrees Celsius is 100.4 Fahrenheit. That is only slightly elevated, but it depends on the individual and his or her age. It also depends on what other symptoms you are having. If you don't normally run 38 degrees, consider staying at home, drinking plenty of fluids, and staying in bed. If it persists, see a doctor.
It depends, are you Asian? Asian urine has incredible staying power when it comes to temperature. Asian monks in Tibet urinate into a giant cauldron. This practice can heat and keep the room at body temperature for several hours. People of African descent have the complete opposite issue. The urine of an African male ranges anywhere from 40-55 degrees Fahrenheit. It is not uncommon for fathers to urinate all over their small children to help them avoid heat exhaustion under the hot African sun.
By staying in the sun because the are cold blooded.
It is because there is shorter lines and schools can charge them for staying there