One year, Johnny's family was having the "extended family" 4th of July cookout at their home. One of the special treats that year was the lighting of the fireworks (Roman candles, bottle rockets, missile batteries, etc.) they had bought out of state (because they are illegal in their state).
Just before they were to arrive, a cousin calls, saying their neighbor's plans had just fallen through, and could they bring them along to the picnic -- they even had extra food to bring. "Sure, the more the merrier!"
Upon arrival and meeting of their cousin's neighbor, it is discovered that he is a police officer. The father turns as innocently as he can to Johnny, and whispers to him to grab the paper bag of fireworks sitting in the kitchen and hide them somewhere quickly. Johnny disappears, and the father changes the topic to food for the day. The family had brought some chicken to grill, so the father tells then the gas grill is all set to use out back -- just turn on the gas and push the ignition button with the lid still closed.
They head out the back, as Johnny comes back in through the front door. The father hurries to him and says, "Whew that was close! That man's a police officer, and he almost saw the fireworks. Did you hide them real well?"
"Oh, yes!” answered Johnny, “Nobody will ever think to look in the grill!"