Me and my little brother went a bit OTT with our tend cop street games (with neighbours kids). We attached strips of card attached with clothes pegs on the spokes of our bikes so they made big farty noises the faster you went.
A house was vacant and unlocked in our street, so we had a look around. We also played robbers and formed a seemingly innocent "knickers gang" with name badges, complete with pants drawn on and names ffs!!
We were between 7 & 9 and commenced a Sunday mornings nicking down the newsagents (sweets/chocklitt/Iced Gems) & a Mk2 Escort police car ride home with grumpy local cooper to narc Daddio whilst our parents were entertaining guests. CLEVAAAH!