pick on
US /pɪk ɑːn/
UK /pɪk ɑːn/

1.
pesten, uitkiezen
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?
Waarom kies je altijd je kleine broertje uit?
•
The older kids used to pick on him because he was small.
De oudere kinderen pesten hem vroeger omdat hij klein was.