I'm Always Right funny Math Tshirt by wopbobalubob on Etsy, $18.00
Ten Commandments of Math Poster
That's hilarious! Some of the commandments actually resemble the original 10 Commandments in structure, like "Thou shall not covet..." and "Thou shall remember the test day [Sabbath Day] and prepare for it [keep it] wholly [holy]"
Gift for math teacher, Funny math teacher mug, Of course I have problems mug