know which side your bread is buttered on

US /noʊ wɪtʃ saɪd jʊər brɛd ɪz ˈbʌtərd ɑn/
UK /noʊ wɪtʃ saɪd jʊər brɛd ɪz ˈbʌtərd ɑn/
"know which side your bread is buttered on" picture
1.

tahu di mana kelebihannya, tahu mana yang menguntungkan

to be aware of where your advantages or benefits come from and to act in a way that maintains them

:
He always helps his boss because he knows which side his bread is buttered on.
Dia sentiasa membantu bosnya kerana dia tahu di mana kelebihannya.
You need to know which side your bread is buttered on if you want to succeed in this company.
Anda perlu tahu di mana kelebihan anda jika anda ingin berjaya dalam syarikat ini.