turn on the waterworks
US /tɜrn ɑn ðə ˈwɔtərˌwɜrks/
UK /tɜrn ɑn ðə ˈwɔtərˌwɜrks/

1.
mula menangis, mengalirkan air mata
to start crying, especially in an exaggerated or insincere way to gain sympathy or attention
:
•
Every time she doesn't get her way, she turns on the waterworks.
Setiap kali dia tidak mendapat apa yang dia mahu, dia mula menangis.
•
He tried to turn on the waterworks to avoid getting a ticket, but the officer wasn't fooled.
Dia cuba menangis untuk mengelak daripada disaman, tetapi pegawai itu tidak tertipu.