I am pretty sure the late River Phoenix is probably saying, "You idiot! Never ever do this at a childrens' charity event!" I think the main thing between River and Joaquin is that River was always a better speaker than his own brother. If you watch anything that River did during interviews, including the one with Joan Rivers and others when he is an adult, River had a better time speaking with someone socially and telling it like it was without going to the whole pretense. Sure, there were times when he paused for a moment and he sometimes was out of it too much, but the thing is that he kept the interview going well. River just knew how to keep the flow going with the interviewer. I know interviews was not his favorite thing, but he handled it like a professional does. Not to bash Joaquin, but if you ever seen him in interviews, he doesn't say a lot and sometimes mumbles his way through one with little explaination. The thing is he let's the interviewer do the most talking while he is either not involved with it or just being himself He is definitely not a very good speaker, let alone not a professional one. Seeing that clip shows that the unprofessionalism of Joaquin Phoenix. Not saying or bashing him. Just telling the difference between the two brothers.