Gadget which Forecasts

Ronie (a naughty son), his Mom and Dad (a Super cop) are invited by a Scientist for Dinner at his res. Since Scientist is the host, he is boasting about his invention and showing some gadget

Scientist : I invented this, it forecasts accurately.

Dad (looking inquisitively) : Oh I see……what is so special about it?

(Ronie is not interested……..he’s enjoying food)

Scientist : It can be very useful for Police Department; it predicts where the crime is gonna take place and you can act accordingly ! !

Ronie (Suddenly taking charge) : Uncle….. my Dad doesn’t need this, his Department is always aware of where the crime would take place even without any gadget and they move away from the site well in advance ! ! ! !

SHUT  UP  U  IDIOT

(Disclaimer : This is purely an imagination, any resemblance to past or present incidence is merely coincidence)