Whenever there is an interview there is a chance that something funny will be said and over the years the ATP has seen it's fair share of funny interview moments.
Every professional athlete over the course of his career gives a lot of interviews. Tennis players are not excluded and whenever they give an interview there is a possibility of something funny happening. This video compiled by the ATP Tennis TV youtube channels shows some of the more funny moments that happened during playing interviews. For example, you can hear Rafael Nadal refer to himself as old when the reporter said that he was the first man to be ranked 1st in three decades. You can also hear Stan Wawrinka call Roger Federer something vulgar. It was a joke of course and everybody shared a good laugh.
You can also hear Del Potro's joking explanation of why he doesn't prefer clay over other surfaces. Besides that, there are also several videos showcasing Player's trying out different languages including Roger Federer and Rafael Nadal trying to speak Chinese. A special segment was dedicated to Andy Roddick who had several funny exchanges during the trophy presentation.
The last segment featured Novak Djokovic heavily who is well known as a jokester around the tour. That segment was funnily referred to as Novak 'Joke' -ovic. it showcased the famous instance when Djokovic impersonated Rafael Nadal in front of Rafael Nadal at the Rome Masters many years ago.