The importance of being on top...

Actual argument among my 2 kids:

Background: The shower is over, not because they're both clean, but as usual, because they've run out of hot water. Fortunately it's not too cold to rinse them before they get out, so we do that first, and then...

Kid 1: I want the top towel!
Kid 2: I want the top towel!

Background: we have a double-towel rack where one towel sits an inch behind, and inch above, the other towel. The towels for the kids are 2 of the exact same towel. EXACT SAME.

Daddy: OK, today is Annika's turn. Here, Annika, you get the top towel.
Annika: Yay!
Arielle: [pouty face]

Daddy: [moves bottom towel to the top towel holder]
Daddy: OK Arielle, you get the top towel too!
Daddy: [hands the new top towel to Arielle]
Arielle: [takes the towel, throws it to floor.]
Daddy: [visible look of distress]
Arielle: I wanted the top towel!
Daddy: But they're the same exact towel! You can't tell the difference, except for where they hang!
Arielle: [starts crying]
Daddy: Arielle, I gave you the top towel!
Arielle: But you moved it!
[large pause while I try to think of some possible way out]
Daddy: Arielle, can I tell you a secret?
Arielle: [moves closer] OK.
Daddy: While you two were in the shower?
Arielle: Yeah?
Daddy: Not looking?
Arielle: Yeah?
Daddy: I switched the towels.
Arielle: [visible look of relief]
Arielle: Yay!
Daddy: [visible look of relief]
[drying]
[more drying]
[pause]
Arielle: [in a whisper] Can you do that every day?
Daddy: [trying very hard not to lol] Sure
Arielle: Yay! (Hugs me)