sweeper
n.— «When it’s time for the ride, Kerri and I will get up front on the Harley with some of the Brothers, and Westbury will be in what’s called the “sweeper” position at the back of the convoy on Vickie’s BMW trike.» —“Bringing turkeys to needy” by Geoff Oldfather TCPalm (Florida) Nov. 14, 2006. (source: Double-Tongued Dictionary)
Further reading
Carmen in Jacksonville, Florida, was told she was pretty as a speck of puff. The more common simile is pretty as a speckled pup or cute as a speckled pup. This is part of a complete episode.
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