suck up to
US /sʌk ʌp tə/
UK /sʌk ʌp tə/

1.
puxar o saco, bajular
to try to make someone in authority like you by flattering them or being overly helpful, often in a way that is not sincere
:
•
He's always sucking up to the boss to get a promotion.
Ele está sempre puxando o saco do chefe para conseguir uma promoção.
•
I hate how she always sucks up to the teachers.
Eu odeio como ela sempre puxa o saco dos professores.