"birthday suit" in Chinese (Simplified)
裸身天生的样子
Definition
“Birthday suit” 是指完全赤裸，就像出生时那样，用于非正式或幽默场合。
Usage Notes (Chinese (Simplified))
非常非正式且带幽默感，多用于开玩笑。常见于‘in his birthday suit’等表达。一般不用在正式场合，仅指一丝不挂的状态。
Examples
He was caught outside in his birthday suit.
他被发现赤身裸体地在外面。
Babies are born in their birthday suit.
婴儿出生时是赤裸的。
He jumped into the lake wearing only his birthday suit.
他只穿着“**birthday suit**”跳进湖里。
After his shower, he walked into the kitchen still in his birthday suit.
洗完澡后，他还没穿衣服就走进厨房。
She forgot her towel and had to hurry to her room in her birthday suit.
她忘记带毛巾，只好赤裸着跑回房间。
I’d be embarrassed if someone saw me in my birthday suit.
如果有人看到我一丝不挂我会很尴尬。