Personalized Funny Chemistry Science Joke You're a 10 pH Scale T-Shirt Baby Bodysuit. You're a 10 on the pH scale, and that's the highest compliment you can get! This funny chemistry joke is perfect for anyone who loves pH puns and chemistry humor. Whether you're a chemistry teacher, a student, or just someone who loves to crack science jokes, this design will definitely make you and your friends laugh. Our one piece baby bodysuit make great gift for newborns, babies, infants, baby showers and expectant moms. An ideal gift for any new parent who will want one in every color.