In a shop with my ds looking at baby stuff and a mum comes in with her two dcs, one in a buggy, another in a sling.
The child in the sling looked about 5! 
He was that tall that when she knelt down to pick something out of the buggy his feet touched the floor and he jumped up which made him bang his head on her chin I had to turn away or I might've laughed
I may sound like a cow but I smiled at her when she first came in and she just sneered at me before launching into loud parenting.