I can see several flaws in this plan. Flaw one: Nobody is going to believe you're Elliot. Flaw two: No, seriously. Nobody is going to believe your Elliot. Flaw three: See flaws one through two, then look at this flaw again.
I remember some people finding Elliot's determination to not miss school odd, but I don't see what's odd about it. It can be great to have some excuse to miss a day or two of school, sure, but Elliot doesn't want to get held back or anything like that. Imagine having to repeat a grade on account of wacky transformation hijinks. That wouldn't be fun times.
Commentary added October 1st, 2014