sweethearting
n.— «People come into the store and buy a bottle at a certain price and the cashier rings up a different product at a much lower price. They call that sweethearting in the trade, and that goes on.» —“Chairman vows to expose thefts at liquor stores” by Paul Moloney Toronto Star (Can.) Jan. 26, 1987. (source: Double-Tongued Dictionary)
Further reading
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There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...