Personalized Dental Hygienist Funny Floss Em Hippo Women's Plus Size T-Shirt. Funny dental hygienist or dental assistant Women's Plus Size T-Shirt - Black with hippopotamus and Floss Em quote. Also perfect for a dentist or dental office staff. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40 combed ringspun cotton/polyester)