Arrghgh I know what you all mean!
DS1 is just 4 and it's non stop - I'm afraid I do end up saying 'can you just give your jaw a rest for 5 minutes?'. Feel really bad then when he says 'oh, but I'm just trying to tell you something Mummy'
The car stories are funny - yes, ds1 rabbits without any pause for breath when we are in the car. They do know when you're not listening! DS2 is 2.5 so is just starting to join in and it's very wearing. Oh no, ds3 is only 7 months but what about when he's at it too? Arrghghghg!