on the fiddle

US /ɑn ðə ˈfɪdl/
UK /ɑn ðə ˈfɪdl/
"on the fiddle" picture
1.

hacer trampas, estafar

involved in dishonest or illegal activities, especially involving money

:
He was caught on the fiddle, taking money from the company.
Fue pillado haciendo trampas, cogiendo dinero de la empresa.
Many politicians are suspected of being on the fiddle.
Muchos políticos son sospechosos de estar haciendo trampas.