Every time I solve a problem he has to go on about how my method was weird, long or unusual, why can't he just shut the fuck up if the proof is right? What more is there to say? What is it to you that I made my proof by contradiction instead of by cases?

I'll never forget when he asked us to prove that $\int_{a}^{a+{\pi}} |sin(x)| = c$ for any a, and he gave me shit for proving $\int_{a}^{a+{\pi}} |sin(x)| = | \int_{n{\pi}}^{n{\pi}+{\pi}} sin(x) |$ first by fucking around with the absolute values.