my two year old has started to lie - just small things - for example saying my 8 year old has stuck her toungue out when he hasn't. really not sure how to respond. we are very calm if he spills/damages anything - so she will always come and tell us. but lying about pushing/sticking toungues out really upsets my 8 year old. he was in tears tonight. sometimes my 8 year old will have brushed past 2 year old but 2 year old will interprete this as a push. any suggestions? they get on well most of the time. 2 year old has a great imagination and is very able verbally.