turn on the waterworks

US /tɜrn ɑn ðə ˈwɔtərˌwɜrks/
UK /tɜrn ɑn ðə ˈwɔtərˌwɜrks/
"turn on the waterworks" picture
1.

开始哭泣, 掉眼泪

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.
每次她不如意,就开始哭泣
He tried to turn on the waterworks to avoid getting a ticket, but the officer wasn't fooled.
他试图哭泣以避免罚单,但警官没有上当。