Ezekiel 23:19-21

Yet she multiplied her whoredoms, remembering the days of her youth, wherein she had played the harlot in the land of Egypt. And she doted upon their paramours, whose flesh is as the flesh of asses, and whose issue is like the issue of horses. Thus thou calledst to remembrance the lewdness of thy youth, in the handling of thy bosom by the Egyptians for the breasts of thy youth.