One time my sister and I were home alone and when my dad came home (earlier than expected), he was trying to be sneaky and quiet because we were supposed to be asleep. Well my sister freaked out and called the cops because she heard footsteps and thought he was a burglar. We both hid in the bathroom (I was way too young and didn't even know what was happening). Long story short the cops come, pull a gun on my dad, and are getting ready to take him in until we came out of the bathroom and told them it was our dad. It was a mess but we laugh about it now.
My neighbour did a similar thing, she was 10 and so excited because her parents had left her home alone and she heard someone going through the kitchen cupboard and freaked and called the cops and ran outside. The cops showed up and surrounded the house and were shouting to "come out of the house with your hands up" movie style and her 16 year old brother walks out in boxers and a hoodie like wtf and it turned out he'd been there the whole time just asleep so she didn't realise
"XD Heh, yeah. Good times, good times"