You start wearing shorts as soon as the slightest bit of sun appears ..... even if it is blowing a gale and bloody cold!
Your kids (and occasionally even you!) start going around the supermarket without shoes on.
Wellies are no longer Wellies they are Gum Boots and Flip Flops are Jandels. You also develop the ability to wear said "Jandels" in all weathers.
Your kids can demonstrate how to curl into a ball during and earthquake and point your bottom (or butt as my five year old likes to say) at a window.
Everything is "Awesome" and "Sweet As"!