But the lies are so funny! Ours has just started lying constantly. She blames her little brother for *everything*. That little brother gets up to some amazing antics.

Biggest one doesn't lie so much as she phrases things in really weird convoluted ways and she is really hard to understand, so we think she's saying the opposite of what she is. I've never seen a child answer yes/no questions with a novel the way she does, even if the question is "do you want lollies".