He never said anything about a lack of responsibility, but in certain situations self-control is a little harder to exert than in others, especially as it concerns certain issues that are more sensitive.
For me, nothing too bad, mostly dumb stuff as a teenager like accidentally starting a fire after a fireworks display went wrong, possession of marijuana (this one happens pretty often), and drunk driving. Okay, that last one is pretty bad, but thankfully I only did it once. Learned my lesson after that.
When I was a kid I used to get into fights every once in a long while, but I'm pretty sure that's more a case of boys being boys than anything else.