lick someone's boots
US /lɪk ˈsʌm.wʌnz buːts/
UK /lɪk ˈsʌm.wʌnz buːts/

1.
leccare gli stivali a qualcuno, fare il lecchino
to behave in a very humble or subservient way towards someone in authority, often to gain favor
:
•
He's always trying to lick the boss's boots to get a promotion.
Cerca sempre di leccare gli stivali del capo per ottenere una promozione.
•
I refuse to lick anyone's boots just to get ahead.
Mi rifiuto di leccare gli stivali a chiunque solo per far carriera.