Personalized CPA Pain Youth T-Shirt. CPA Certified Pain In the Ass Youth T-Shirt - Vintage Royal Blue. This humorous twist on the phrase Certified Public Accountant is a funny design for birthdays, graduation, holidays and tax season. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.