Had an opponent this weekend actually say to my doubles partner and I, "why are you guys so nice?" after we called a double bounce and had confirmed a couple of their line balls as good early in the match.
However, when we came back to win 2-6,6-4,10-4 they weren't as cordial. After a few outbursts about how lucky a couple of net cord shots of ours were, one of my opponents smashed his racket into the light pole after match point.
So, as honest as I am, I still get accused of being a bad sport when I get a couple bounces.