speed money
n.— «Another term widely used at border crossings is “expediting fee.” For a euphemism it is surprisingly accurate: paying it will keep your bags, and perhaps your contraband, from being dumped onto a floor and sifted through at a leisurely pace. (A related term, used in India, is “speed money”: paying it can get essential business permits issued considerably faster.)» —“How to grease a palm” Economist (United Kingdom) Dec. 19, 2006. (source: Double-Tongued Dictionary)
Further reading
A California listener shares a couple of pranks from her time in the U.S. Marines, where unsuspecting recruits would be ordered to complete impossible tasks. She remembers that newbies would be sent to retrieve a bucket of frequency grease or a...
Jodi, a native of California’s Central Valley, grew up using the word erp (or urp or earp) for vomiting—only to discover as a child that no one outside her family had heard it. The Dictionary of American Regional English documents urp as...