• Funny simple math problem age number 13yrs 13 years old 13th b-day bday geek geeky nerd nerdy gift idea graphic tee shirt. Looks great in five colors to choose from: black, green, slate, navy blue, red, and wide range of available t shirt sizes too, Xl, 2xl, 3xl, plus size, for mom, dad, men, women, ladies, girls, teens, adults, boys, children, teens and youth - Clothes clothing apparel dress tshirt.
• Lightweight, Classic fit, Double-needle sleeve and bottom hem

Funny simple math problem age number 13yrs 13 years old 13th b-day bday geek geeky nerd nerdy gift idea graphic tee shirt. Looks great in five colors to choose from: black, green, slate, navy blue, red, and wide range of available t shirt sizes too, Xl, 2xl, 3xl, plus size, for mom, dad, men, women, ladies, girls, teens, adults, boys, children, teens and youth - Clothes clothing apparel dress tshirt.shirt ff