on someone's ass
The phrase "on someone's ass" is a colloquial and often vulgar expression used primarily in North American English to describe persistent pressure or close pursuit.
Definition
B2Driving
(informal, vulgar)Following another vehicle very closely, often in an aggressive manner.
Example
- The car behind me was on my ass the entire way home.
B2General
(informal, vulgar)Persistently pressuring or criticizing someone.
Example
- My boss has been on my ass all week about the project deadline.
Similar
Terms that have similar or relatively close meanings to "on someone's ass":
on someone's backbe on someone's nutssomeone's arse offyour assup the assin someone's facemy asskick someone's asson someone's handslike assbust one's assass kickinglick someone's asson one's backon the bumdie in the asson one's headon someone's accountwhoop asshave someone's headbust assunder someone's nosepiece of assride one's bumpergood on someonehorse's assget in someone's hairbutts upass over teacups