Red and Bad for Your Teeth

This is a classic riddle where the answer is a literal object that matches the description. It's funny because you're likely thinking of something sweet like candy and not a piece of building material.

• Brick
• Teeth
• Dead
• Morbidity
• Bad
• Stupid jokes

• What's brown and rather bad for your dental health? - A baseball bat.
• What’s big, red, and eats rocks? A big, red, rock eater.
• What's red and smells like blue paint? Red paint.
• What’s white and sticky and better to spit out than to swallow? Toothpaste.