But don't take my word for it. Take the word of a college undergrad who needed a secondary activity while in a restroom stall. Some preexisting graffiti to serve as her premises, she attempted some deductive reasoning:
Stevie Wonder is awesome.
God is awesome.
Therefore, Stevie Wonder is God.
The bathroom brainiac even goes so far as to boast that she'd learned this in her logic class. The primitiveness of bathroom tagging disturbs me, yet I am troubled by something greater: that I myself never learned to construct a deductive fallacy by affirming the consequent.
A good lesson to gain is to save your smarts for the classroom--it is only there that your professor can offer feedback.