U Never want something bad enough to go to the doctors...or get a parent overly worried....advice ive used ever since watchin Feris Buellers day off....great movie. but it seriously works. i usually use: Headache, Stomach ache, or say i feel freezing. the trick for the stomach ache, is do it the night before around 3AM make sure u wake up your parents by saying u feel like your gonna blow chunks and sit in the bathroom for a half an hour doubled over. after that say your feeling ok enough to go to bed.
My advice: Fuck it. Go to school, you lazy ass.