Yeah, definitely don't do that.
You received income from a job, then spent that money on expenses. Regardless of what expenses you put it toward, you're subject to the same two-step process as all taxpayers. First, you owe taxes on the income based on the federal (and probably state) tax rates. Second, you may qualify for deductions or credits that reduce that tax burden - there's a bunch of them, and qualifications for each are specific and not subjective.
These deductions and credits are the only correct (aka legal) way to avoid taxes on income. Making your own alterations to the income you report is perpetuating tax fraud.
