pick on
US /pɪk ɑːn/
UK /pɪk ɑːn/

1.
mengganggu, mengusik
repeatedly single out (someone) for criticism or unkind treatment in a way perceived to be unfair or unjust
:
•
Why do you always pick on your little brother?
Mengapa kamu selalu mengganggu adikmu?
•
The older kids used to pick on him because he was small.
Anak-anak yang lebih tua dulu mengganggu dia karena dia kecil.