<human>: When my Dad was growing up in 1980's New Zealand, racism was still quite prevalent in society. 

Now, while my dad was white, his neighbour and friend Judith was Maori. This wasn't such a big deal with other children who at that age (They were around 8 when the incident at hand occurred.) were relatively chill as far as kids go and accepted her as their friend just like everybody else.

However, there was this one boy Simon who thought he was hilarious, generally making rude remarks and telling everyone who would listen that Judith was a dirty nigger and that my father was a nigger lover. Back in those days teachers did jack shit as far as bullying was concerned, and considering this kid's dad was on the PTA it was one of those things 'best left alone'.

Anyway, one afternoon after school Judith came around to help my dad pick up the dog poop on the lawn including the old, white crusty turds under the hedge where the dog liked to lay in the hot Summer heat. 

The next day at lunchtime they see Simon and his friends who were sitting on the quad drawing with chalks. My dad goes up to them with a few of the crusty old turds in his pocket and offers to trade the 'pumice' (Fun fact - when chalk is in short supply you can grate pumice against concrete for the same effect, plus it's easier to hold on to and doesn't make your hands chalky after use.) in exchange for snack foods. Of course Simon just snatches it and my father runs back to Judith while they had a good giggle at these little shits getting stale dog turd all over their hot little hands.

Can you condense the text into three sentences or less?
<bot>: 8 year old boy taunts my dad and his friend, 8 year old boy inadvertently ends up playing with dog shit instead of pumice.