Funny Laughing Gas HeHeHe Chemistry Shirts Science Jokes PunMachine wash cold with like colors, dry low heat Funny science chemist jokes tee shirts for youth, kids, boys, girls, teens, women and men. For a more loose fit, please pick a size up. A cool and funny gifts for chemistry mom, dad, friends who work in a lab. Also a great gifts for chemist teachers and students. Science Nerd will get this joke. Lightweight, Classic fit, Double needle sleeve and bottom hem We use high quality and Eco friendly material