This piece of rudeness was more than Alice could bear: she got up in great disgust, and walked off; the Dormouse fell asleep instantly, and neither of the others took the least notice of her going, though she looked back once or twice, half hoping that they would call after her: the last time she saw them, they were trying to put the Dormouse into the teapot. At any rate I'll never go THERE again!' said Alice as she picked her way through the wood. It's the stupidest tea-party I ever was at in all my life!
This passage describes Alice's frustration and displeasure at a rude and unpleasant tea-party she attended. Feeling overwhelmed by the rudeness, she decides to leave in disgust, while the Dormouse falls asleep and the other guests ignore her departure. Alice looks back, hoping someone will call her back, but they remain indifferent, even when they attempt to put the Dormouse into a teapot.
She expresses her strong dislike for the experience, declaring, It's the stupidest tea-party I ever was at in all my life! As she walks away through the woods, she firmly decides she will never return to that place, emphasizing her displeasure with the entire event.