One of the characters on the show is Swiper - a fox who sneaks around and tries to steal things from Dora. (As I type this, I realize the show's concept doesn't sound particulary wholesome but Dora's daily adventures with Swiper are presented in a positive, "good triumphs over evil" kind of way.)
As soon as Swiper is spotted trying to steal something, Dora asks viewers to shout/sing along with her, "Swiper NO SWIPING!"
Here's Walker, perched on the edge of his favorite bed with his favorite toy, Squirm the Worm.
As I watched him, he seemed particularly fidgety. He's put Squirm behind him - sort of like he's protecting it.
I walked over to investigate. As I came around the coffee table, this is what I saw:
It's Maggie. I shouldn't have been surprised. Squirm is Walker's favorite toy. Squirm is also Maggie's favorite toy. Walker wasn't fidgeting. He was on sentry duty.
I walked out of the room to see what would happen.
This is what I found when I came back:
Now Maggie has Squirm.
Behind me, and between whines and sighs, I swear I can hear Walker softly singing, "Swiper NO SWIPING." Poor Walker.