Britt and Paisley were taking turns the other day riding the horse Meme and Papa got Britt for Christmas two Christmas's ago. They were riding together but Paisley didn't let that happen very long. I think she feels like she has to defend herself against Britt because she won't let him push her in the stroller or ride on things with her. Sibling rivalry starts young.
Side Note: Yes, Britt is in his underwear and they are backwards. That's the norm here at the White's.