I think that ' s probably true , too . But I thought about it and I think it ' s more that young children are less aware of the tipping point than adults and tend to leave it right until the last minute . You know as an adult when you feel like you need the toilet , and then when you feel like no , I ' m really uncomfortable now , I NEED TO GO . And then when you ' re like fuck , I might actually piss myself now . The third stage obviously gives a stronger signal which young kids start to recognise before they ' ll notice being uncomfortable or just basically thinking that they need to go soon . Same as why they fart all the time because they don ' t tend to find the need to poop overwhelming enough to interrupt other things like playing . There ' s another ELI 5 about why you can go so long when needing to pee that you somehow stop needing it . But I don ' t know what the reason for that is offhand .