From the Song of Solomon: Sgs 7:2 Your navel is a rounded goblet that never lacks blended wine. Your waist is a mound of wheat encircled by lilies.

Some believe the translators screwed up the word translated as "navel." If you start at verse 7:1 you can see the poet works his way up his lover's body from her feet to her head/hair. Many believe he was not talking about her navel being full of mixed wine.....