not know your ass from your elbow
US /nɑt noʊ jʊər æs frəm jʊər ˈɛl.boʊ/
UK /nɑt noʊ jʊər æs frəm jʊər ˈɛl.boʊ/
1.
tidak tahu apa-apa, bodoh sekali
to be very stupid or ignorant; to lack basic knowledge or common sense
:
•
He's so incompetent, he doesn't know his ass from his elbow.
Dia sangat tidak kompeten, dia tidak tahu apa-apa.
•
Don't ask him for help; he doesn't know his ass from his elbow when it comes to computers.
Jangan minta bantuannya; dia tidak tahu apa-apa tentang komputer.