get by the balls

Etymology
See.

Verb

 * 1)  To have complete control over someone, especially of a woman abusing a man's infatuation with her.
 * If you’ve got them by the balls, their hearts and minds will follow.
 * (Theodore Roosevelt)
 * (Theodore Roosevelt)

Translations

 * Italian: tenere per le palle
 * Russian: держа́ть за я́йца