Smokers who litter the planet with their butts.
Dogs owners who let their leashed dogs get close to the roadway as cars are going by.
Dog owners who take the dogs for walks on asphalt during the hottest time of the day.
Grocery store shoppers who don't keep their cart to one side of the aisle or the other.
People who take walks in the roadway - when there are sidewalks available.
Drivers ahead of you....who drive BELOW the speed limit for a mile....until they get up to an intersection which is amber....then they stomp it and run the light just after it turns red. Or they do the same thing until they get to a stop sign and then fail to make a complete stop. WTF?
LAZY shoppers who do not return their empty carts to the cart corral. If possible - I always say to them "There's a corral for the carts right over there (while pointing to the corral." It's so funny - then they have no choice but to take the cart there (snicker).
People who talk on their cell phones in public. Especially....when they step outside their house and do it - loud enough for the neighbors to hear. These are not just 15-30 sec. calls. They stand(or sit) there and go on and on and on about stupid chit....please I don't need to hear your phone conversation.
Shoppers who "tailgate" you while in line. WTF is the hurry? Chill.
Women who take a bath in perfume before going somewhere. These are the ones who use the smelliest fragrances too. Can you say gag?
Those are a few off the top of my head....