I see firewroks at night time?

We had a great 4th of July this year. It was dry and we got

to see fireworks. Ever since Cody has asked every night "I see fireworks at night time?" we tell him no Cody that was just a special thing. He then replies "Not fair!" and still insists he will see fireworks at night time. When it starts to get dark we know what comes next. Cody comes to one of us and says "We go see fireworks now" We tell him no there are not fireworks to go see. Lately he has become so obssessed that he insistes he is actually seeing fireworks and tries to get us to come to the window to watch with him. It is very entertaining and a nice change from his obsession with the car wash, but I am sure in a few weeks this will get very old!