make fun of
US /meɪk fʌn əv/
UK /meɪk fʌn əv/

1.
burlarse de, mofarse de
to tease or mock someone or something in a playful or unkind way
:
•
The children started to make fun of his new haircut.
Los niños empezaron a burlarse de su nuevo corte de pelo.
•
It's not nice to make fun of people's accents.
No es agradable burlarse de los acentos de la gente.