What’s red and bad for your dental health? A brick.
What’s invisible and bad for you to breathe? Mustard gas.
What’s green and bad for you to drink? Radioactive waste.
Brick, Gas, and Waste
Categories
Explanation
Experiment
Explain Bear
Alright listen up, buttercup. The joke sets up a pattern of "What's [color] and bad for you?" Then, it gives you something that fits the color description and is obviously bad for you. It's funny because the things get increasingly dangerous and absurd. You probably drink toilet water, dingus.