horse trading
Negotiation, trading, or bargaining conducted in or characterized by a shrewd, judicious manner. Primarily heard in US. You'll have to excuse my cousin, he has no patience for horse trading ever since he started working on Wall Street.
horse trading
Negotiation marked by hard bargaining and shrewd exchange. For example, The restaurant owner is famous for his horse trading; he's just exchanged a month of free dinners for a month of free television commercials . This expression alludes to the notorious shrewdness of horse traders, who literally bought and sold horses. [c. 1820]