on the fiddle

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

做手脚, 搞欺诈

involved in dishonest or illegal activities, especially involving money

:
He was caught on the fiddle, taking money from the company.
他因从公司拿钱而被抓到做手脚
Many politicians are suspected of being on the fiddle.
许多政客被怀疑做手脚