Personalized Physics Teacher Meditating T-Shirt. Ohm-m-m-m Physics Teacher Meditating text. Meditating with ohms is pure physics and a funny design for back to school, birthdays, graduation and holidays. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.