For math teachers who calculate exactly how many takeout nights their salary allows, this tumbler says what we're all thinking: differential equations buy decent takeout tonight. It's dark, it's real, and it's for every educator who grades papers at 10 p.m. while mentally comparing their hourly rate to the cost of a burrito bowl. You love the subject. You love the students. The paycheck? Well, that's a different equation. This tumbler holds your coffee during first period and your iced whatever during seventh, all while broadcasting the beautiful, bleak math of teacher pay. Perfect for the math teacher in your life who deserves a raise but will settle for a laugh and a decent drink. Gift it to the one who taught you that variables change but passion is constant.
