The children are looking at an actuarial prediction of 25 years — supposedly this is based on a survey done in the 80s that concluded with the finding that inner city males growing up in the ghetto had a life expectancy of 25 years due to violence, drugs, no healthcare, etc.

Sounds like a low-ball estimate to begin with..but hey! At least the kids are still alive (good to hear).
Also, could be a crazy reference on 2Pac still actually being alive, seeing as he died when he was 25, not making past 25, but the jokes on you because he' still ALIVE. 2Pac’s supposed to be coming back in 2014, be ready.