have (got) someone by the short and curlies

US /hæv ɡɑt ˈsʌm.wʌn baɪ ðə ʃɔrt ænd ˈkɜr.liz/
UK /hæv ɡɑt ˈsʌm.wʌn baɪ ðə ʃɔrt ænd ˈkɜr.liz/
"have (got) someone by the short and curlies" picture
1.

完全掌控某人, 抓住某人的把柄

(informal, sometimes offensive) to have complete control over someone, especially by having an advantage over them or by knowing something about them that they want to keep secret

:
The company had him by the short and curlies after he signed that contract.
他簽了那份合同後,公司就完全掌控了他
She knew his secret, so she had him by the short and curlies.
她知道他的秘密,所以完全掌控了他