know one's ass from a hole in the ground (English, verb)
expansion: know one's ass from a hole in the ground (third-person singular simple present knows one's ass from a hole in the ground, present participle knowing one's ass from a hole in the ground, simple past knew one's ass from a hole in the ground, past participle known one's ass from a hole in the ground)
Senses:
glosses: To have an adequate level of knowledge or skill; to understand what one is doing or talking about.
tags: idiomatic
vulgar
Forms:
form: knows one's ass from a hole in the ground
tags: present
singular
third-person
form: knowing one's ass from a hole in the ground
tags: participle
present
form: knew one's ass from a hole in the ground
tags: past
form: known one's ass from a hole in the ground
tags: participle
past
form: know the difference between one's ass and a hole in the ground
tags: alternative