Where in the world is Jack Duncan?

In the spirit of the little game we're playing, I thought I should provide you all with a transcript of a phone call I just received from my child.

Jack: "HI, MOMMY!!!! We're having SO MUCH FUN!!!"
Me: "You are, buddy? That's great!"
Jack: "Yeah! SUPER DOOPER FUN!"
Me: "I miss you!"
Jack: "I miss you too! Byyyyyyyyyyeeeeeeeeee!"

The "Bye" trailed off as he ran off to do something else Super Dooper Fun. Ah, to be Jack this week. Keep guessing!