DD is 20 months old. I'm finding her descriptions of things she doesn't recognise or have words for both adorable and very accurate. Highlights include the grippy spots on the bottom of the feet on her sleep suits being 'sparkly bubbles' and the piece of mustardy sandwich she stole from me tasting 'spiky'.
My absolute favourite though, came when we were out for a walk a couple of weeks ago and saw black lambs prancing around a field. I asked her is she knew what they were, she stared for a moment and happily announced they were dancing cats. 
What have your toddlers come out with?