have someone by the balls

US /hæv ˈsʌmˌwʌn baɪ ðə bɔlz/
UK /hæv ˈsʌmˌwʌn baɪ ðə bɔlz/
"have someone by the balls" picture
1.

tener a alguien agarrado por los huevos, tener a alguien bajo control

(vulgar slang) to have complete control over someone, especially by having information that could harm them

:
The prosecutor really had him by the balls with all the evidence.
El fiscal lo tenía agarrado por los huevos con todas las pruebas.
If you owe them money, they'll have you by the balls.
Si les debes dinero, te tendrán agarrado por los huevos.