Nastily Wonderful Planet

     "Yack, what a smog they have here. A stinky planet. We'd better fly, and we'll return in the autumn." an alien rubbed his sweaty forehead.
     "True, those damn Earthlings made a terrible mess." sighed the second newcomer.
     "Strange planet." added the third one. "In one region where they say spring for a certain season, and in the same area, the same word means a stream of liquid that erupts from the fertile soil. How to know what these earthlings mean?"
     "Why do you come back then?" asked puzzled the first one.
     "You know, that pizza of theirs, fries, pepper-flavored chips…"