now a baby lying utter tosh but my 2.8yo can and does lie, she told grandad that we went to tescos and left the baby at home when ds was about 6weeks old, she was 2.1yo at the time. but she knew this would cause a reaction and a bad reaction at that. obv my dad didnt believe her but some people would have done.
she tells me keiran made the mess with her toys (when hes fast asleep in bed)
she tells me it was the kitten who spilt her juice (when hes sat next to me)
it is a life skill and obviously needs to be learnt at some stage, 6months is ridiculous but i also think that thinking they dont know how to lie until 4yo is ridiculous too