寸丝不挂

寸[一]丝不挂 [cùn sī bú guà]

1. ■ （赤身裸体） be stark naked; not to have a stitch on; not to have a rag to one's back; in a state of nature; in nature's garb; in one's birthday suit; strip to the buff; There is not a shred of clothing on him [her].; not a stitch of clothing on; totally nude