Well, do be honest. If you don't feel like going, say so! But include a reason, like: "If you make me go, I'll snap at my teachers and everyone around me." Then again, it might only work for me because of my autism.
Sing it to her ... "Mutha, don't wanna go to school today, I think I'd rather go outside and play, yeah, They keep callin' askin' me, if I'll come in, is that sin, if bein' lazy is the only reason, It's getting late, so Mutha don't you hesitate, to pack my lunch and I'll be in my way to school ..." - Extreme (Mutha)
What grade are you in? You know, school isn't going to last much longer and you will be done before you know it. Make the best of it and get your education. It is a very valuable to be educated in a world full of morons.
Hey kid if you can sit down in you're living room and watch tv then you are not sick enough to stay home. When I was a kid the only way I stayed was if I was sick in bed. Having the sniffles doesn't constitute staying home. That's why you're moms calling shinanigins on what you say