thick as thieves 大の仲良し

thick as thieves は大の仲良し、マブダチという意味です。2:20 I see you two all the time. you're thick as thieves, you are. he must have said something. お前ら二人はいつも一緒で。仲がいい。やつはお前に何か言ったに違いない。

The Shawshank Redemption - Escape Andy Dufrense
https://www.youtube.com/watch?v=BA0gmdf2ZqI  0:15 テロップ thick as thieves 盗人の絆
Flash Rob Video: Mass Theft Becomes Latest Teen Trend on Web

練習問題解答
a-5257 thick as thieves
a-5639 thick as thieves
b-2030 thick as thieves
b-4705 thick as thieves