鼠腹蜗肠

Explanation: Mole in the stomach, the intestines of snails. Metaphor limited or petty request. 　　Source: "Happy Excursion": "wren nest in the deep forest, but one; Yan River rats to drink, but full of." 　　Examples: Story ah, just say you're a wide-Hai amount of cents, who knows a ~ bidding. (Ming Wu Cheng-en, "Journey to the West," the seventy-sixth back)