he has always had an active imagination, but it seems to be getting a bit too much. if that makes sense? eg, he will be sonic the hedgehog, mummy you be knuckles and thats the way it carries on. at first it would last for 30mins or so but now it carries on for days. (we have been on the sonic theme for 3 days now) when its time to get back to reallity, ds becomes v. upset. i have been trying to monitor this, trying to work out if he is using role play to work out a problem with nursery etc, but i admit defeat, i ain't got a clue. ne one else had experience of this??