dog’s bollocks, the

(名詞 － 複數型) (英俚) 最好、最佳、最棒的事物。

• My new mobile phone is state-of-the-art – the dog’s bollocks. (我的新手機是最新型的 － 是最棒的產品)
• His speech was the dog’s bollocks. (他的演說最棒)