Kids shirts with sayings are hilarious and make for funny yet practical gifts. Express your sense of humor with funny quotes and creative sayings! What’s a better way to make someone laugh? Most of these funny kids shirts are available on Zazzle, with the option to also customize a shirt with a quote and design of your very own. Etsy also has a really cute selection of kids’ funny shirts and onesies. Here are 15 of my favorite funny kid shirt designs.