back up the truck
 v. phr.— «The safety of these securities caused financial firms to load upon on them (“back up the truck,” in Wall Street parlance). They were considered so safe that financial firms used borrowed funds to buy more, and more, and more.» —“The Credit Crisis: Taking the Long View” by Douglas Branson Jurist Oct. 9, 2008. (source: Double-Tongued Dictionary)

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