CC Madhya 18.60

dui-dike mātā-pitā puṣṭa kalevara
madhye eka ‘śiśu’ haya tribhaṅga-sundara
Word for word: 
dui-dike — on two sides; mātā-pitā — father and mother; puṣṭa kalevara — very well built body; madhye — between them; eka — one; śiśu — child; haya — there is; tri-bhaṅga — curved in three places; sundara — very beautiful.
Translation: 
“There are a father and mother with well-built bodies, and between them is a very beautiful child who is curved in three places.”