Hie you to church; I must another way,
To fetch a ladder, by the which your love
Must climb a bird’s nest soon when it is dark.
– William Shakespeare
Romeo and Juliet, Act 2, Scene 5. Making a bawdy joke, the Nurse teases Juliet about her wedding night. She is talking about Romeo climbing a ladder to Juliet’s room, but also onto her and having sex. A "bird’s nest" is a sexual pun and slang for female genitals and pubic hair.