I feel very sad. The little gecko can't borrow the tail is a sentence from "Little Gecko Borrows the Tail", which says that the little gecko knots the tail with others, and the little gecko can't borrow the tail, so he is very sad. He climbed and climbed and climbed home to find his mother. The little gecko told her mother about borrowing her tail, which was a very instructive text to show that she was very sad.