in your birthday suit
US /ɪn jʊər ˈbɜrθ.deɪ suːt/
UK /ɪn jʊər ˈbɜrθ.deɪ suːt/

1.
tanpa busana, telanjang
naked; without any clothes on
:
•
He was caught running around the garden in his birthday suit.
Dia tertangkap berlarian di taman tanpa busana.
•
She felt embarrassed to be seen in her birthday suit.
Dia merasa malu terlihat tanpa busana.