Ooooh that brings back memories. ...
When I was four, what I wanted for Christmas more than anything else was a 90° crossing. Christmas morning, presents opened... no crossing.
Had breakfast, and Mom and Dad suggested maybe I should go out and get the newspaper, something I was normally tasked with. On the sidewalk... my 90° crossing. "Oops, it must have fallen out of Santa's sack!"
Yeah, my parents had no idea what they wrought.