A true story...
My wife and I frequent a BBQ restaurant, where we are friends with the owner/chef. He prides himself as a beer aficionado and has at least a hundred brews avaliable on the menu. One day, a brewery sales rep came in with something so rare and unusual that my chef friend was only offered a taste from the growler. He tried to buy the rest of the growler, but the rep said that he could be fired for selling it, which was against the rules. Instead, he decided to cook the sales rep a Cajun calamari dish in exchange for the remainder of the beer.
As the chef, my wife and I sampled this rare brew over the story of how he had acquired it, I had to ask this question:
"Was it squid pro quo?"