My son is 3 and I just find it so hard to cope with him sometimes - I just wish that I had someone to tell me what to do with him!
The other day when shopping, he ran away 3 times and came back telling me that it was funny. It was not and I wanted to cry.
I really do think that when our children get to a certain age, they should give us some helpful advice - similar to a handbook 
I know that it is because he is tired, and I also know that it is my own fault for not going up home and getting his pushchair - though when he's refusing to walk and I do not have spare hands to carry him, it is very difficult to keep that in mind!