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.
hiçbir şeyden anlamamak, aptal olmak
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.
O kadar beceriksiz ki, hiçbir şeyden anlamıyor.
•
Don't ask him for help; he doesn't know his ass from his elbow when it comes to computers.
Ondan yardım isteme; bilgisayarlar konusunda hiçbir şeyden anlamıyor.