know one's head from one's ass (English, verb)
expansion: know one's head from one's ass (third-person singular simple present knows one's head from one's ass, present participle knowing one's head from one's ass, simple past knew one's head from one's ass, past participle known one's head from one's ass)
Senses:
glosses: Synonym of know one's ass from a hole in the ground.
Forms:
form: knows one's head from one's ass
tags: present
singular
third-person
form: knowing one's head from one's ass
tags: participle
present
form: knew one's head from one's ass
tags: past
form: known one's head from one's ass
tags: participle
past