Personalized Panda Proof That Math Teachers Multiply Funny Toddler T-Shirt. funny math themed baby quote with panda says I'm proof that math teachers multiply A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.