The shrieking

Brandon told me the old lady wasn't home,
So I went round the back of the house and climbed into her garden,
There it was, my new shiny orange ball,
Two days pocket money that was,
Then I heard a shriek,
I froze,
Turns out it was the couple next door,
I could tell by the repeated shrieks,
So I unfroze and climbed back over calmly.