Picture If you have to be told hanging a noose in an African-American student's doorway is harassment, a flyer isn't going to stop you.
Picture Is there really a way to tell if a BABY is drunk? What, it stumbles around? Pukes? Smells bad? There's not too much of a payoff since you'll just have a normal baby.
Picture "Lava crust warning sign at Yellowstone National Park. You can fall through and get badly burned if you are dumb enough to go out on it. I love how the mom is like "Oh no!" and the dad is just sort of nonchalantly walking away."