Show off your sense of humor with this black, cotton graphic t-shirt. The tee features the classic "Knock Knock, Who's There? Doctor. Doctor Who? Yes" joke printed in a vibrant, light yellow font. This is a standard fit tee, ideal for casual wear, lounging at home, or making a statement wherever you go. The simple design makes it versatile to pair with jeans, shorts, or joggers. A must-have for fans of puns, jokes, and comfortable everyday style. It's sure to get a laugh! Upgrade your wardrobe with this fun and quirky piece!