have/get your snout in the trough idiom UK informal
便宜；不应得的利益
to have or get a share of a supply of money or some other advantage that people eagerly and sometimes dishonestly take
The council had been handing out grants indiscriminately, and people were hurrying to get their snouts in the trough. 市政会一直在不加鉴别地分发补助金，结果人们都趋之若鹜地去捞一份。