3 ms·Kids Using Soft Drinks to Fake Positive Results on Covid-19 Tests37 points by _joel 5y agothebean11 5y agoAwesome. I used to rub my forehead to fake a fever on those forehead scanning thermometers.tssva 5y agoToo old for those forehead thermometers. In my day it was the old fashioned mercury thermometers. Kids would hold them against incandescent light bulbs to fake a fever.