Ever known someone who yells about harm to environment then go out and smoke or drive or use pesticides?

I'm amazed at the people who claim to be environmentally conscious--hugging trees, talking about ozone depletion; then, sneak about driving cars with an exhaust that smokes, or smoking cigarettes, or using pesticides. Ever known anybody like that? Sort of like a person who talks loud and long about how to be healthy, abstaining from fast-food places; but, one day you catch him or her sneakily eating a huge fast food burger and a big bag of greasy fries. Ever known anybody like that?