Decorate laptops, Hydro Flasks, cars and more with removable kiss-cut, vinyl decal stickers. Glossy, matte, and transparent options in various sizes. Super durable and water-resistant. Math T-Shirts with funny math joke, funny mathematics, mathematician, mathematical saying - Math The Only Subject That Counts. Math student and math teacher gift idea for back to school, 100 days of school, happy first and last day of school.