spend a penny

相關對話：

1. I'm just going to spend a penny.
   我要去廁所。

英文解釋：

動詞 spend a penny:

1. eliminate urine
   同義詞：make, urinate, piddle, puddle, micturate, piss, pee, pee-pee, make water, relieve oneself, take a leak, wee, wee-wee, pass water