Is it ironic that...

"'Sure, that's what I mean," Doc Daneeka said. "A little grease is what makes this world go round. One hand washes the other. Know what I mean? You scratch my back, I scratch yours.' Yossarian knew what he meant. 'That's not what I meant,' Doc Daneeka said as Yossarian began scratching his back. 'I'm talking about cooperation. Favors. You do a favor for me, I'll do one for you. Get it?"