Where is the greenest grass?

Lunchtime conversation today:
Noah: When I was a little kid, I used to wish I was older. Now that I'm older, I wish I was a little kid.
Me: The grass is always greener. Hey, that reminds me of something I read that I wanted to tell you.  Do you know where the grass is the greenest?
Sarah: The other side?
M: No.
N: This side?
M: No.
S: In heaven?
M: No.
N: In hell?
S: There IS no grass in hell, Noah!
N: Wrigley Field?
M: No.
S: The other side?
M: No. Still no.
N:  The side you're on?
M: No.
[This went on for several minutes, until someone finally asked.]
N: Where?
M: Where you tend it. Ponder that.
N: That's Wrigley Field!