My son clogs our toilet on a pretty regular basis. I don't know how many times we have to tell him not to use so much toilet paper or at least give a cursory in-between flush, but apparently it hasn't been enough so far. Though, sometimes he just doesn't flush at all. Just fills up the bowl, leaving it a nice grotesque smelly surprise for the next person to deal with. Both my kids forget to flush often enough though. I kind of have to blame the schools here now for installing auto-flush toilets throughout all schools. I mean, why? They get in the habit of never flushing at school and it carries over to home. To perhaps solve the problem of a few kids not flushing, they've now taught all kids not to flush. Lovely.