Chinese

		abdomen; belly; stomach	inside; within; in inside; within; in; lining of clothing	really and truly; aim; clear really and truly; aim; clear; (possessive, modifying, or descriptive particle); of	roundworm; intestinal worm
trad. (肚子裡的蛔蟲/肚子裏的蛔蟲)		肚子	裡/裏	的	蛔蟲
simp. (肚子里的蛔虫)		肚子	里	的	蛔虫
Literally: “a ringworm inside someone's stomach”.

Idiom

肚子裡的蛔蟲

1. mindreader; to read someone's mind

   • 莉經常說輝是她肚子裡的蛔蟲，好多的事情都不用說，也就是心照不宣吧。 [MSC, trad.]

     莉经常说辉是她肚子里的蛔虫，好多的事情都不用说，也就是心照不宣吧。 [MSC, simp.]

     From: 我的泪默默的流了下来

     Lì jīngcháng shuō Huī shì tā dùzi lǐ de huíchóng, hǎoduō de shìqíng dōu bùyòng shuō, yě jiùshì xīnzhàobùxuān ba. [Pinyin]

     Li often said that Hui could read her mind; many things were implicitly understood without needing to be said out loud.

Synonyms

• (Cantonese) 肚裡面條蟲／肚里面条虫