Well, my DD2 (4.5) can be known as a bit of a "heckler"
Last week, me and the kids were in the local Park. Bloke walks past, who just so happens to have long hair tied back.
Out of nowhere, DD2 shouts across "oi, mister - get your hair cut tomorrow!!!" I was mortified - although desperately had to control a laugh!
Later that day, we noticed a young lad with a mohican - desperately tried to distract DD2 so she wouldn't notice!