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Press a hot water bottle against your forehead for a few minutes to make it feel warm to the touch. Alternatively, use a heating pad on a low setting to warm your forehead, but make sure you put something between your face and the heating pad, such as a towel. You don't want to burn yourself! When someone comes in to check on you and feels your forehead, it'll be warm enough that they'll think you have a fever. The hot water bottle trick is a classic one when faking a fever, and has been used for decades with great success. Spicy foods, like jalapenos, chiles, or peppers, can actually increase your body temperature. If you have something like this on hand, eat a little bit to raise your temperature naturally. Don't overdo it, thoughyou don't want to get sick or be in serious pain from eating something too spicy! If you overdo it and eat something too spicy, drink some milk. This will help mitigate some of that heat. Another great option to try is a bowl of curry. Try eating that for lunch before faking your symptoms. The simplest thing to do is to cover your head with a blanket for a few minutes. The reflected heat will make you look flushed, as well as increase the temperature of your forehead. Alternatively, do some exercises, like jumping jacks or jogging in place, to make your face flushed. The added rosiness to your skin will make the fever act more believable. Run a washcloth under warm water for a few minutes. Once it's warm, place it over your face, leave it there for a few minutes, then take it off. Alternatively, spritz your face with a fine mist from a spray bottle full of water, instead. Make sure your face isn't soakedyou only want the appearance of sweaty, clammy skin.
Heat your forehead with a hot water bottle or heating pad. Eat spicy foods to raise your temperature naturally. Exercise or hide out under a blanket to make yourself look flushed. Press a washcloth to your skin or spritz your face to make yourself sweaty.