fool me once...

Apparently, Truett is potty-trained. Who knew? Certainly not me. I've been sporadically having him wear big-boy underwear and the results have been mixed. And yes, I know that switching him back and forth from diapers to underwear isn't the best plan. But the thought of dealing with a complete outfit change at the park, while trying to keep an eye on the other two kids, is overwhelming.
 But today, I decided that it was time to bite the bullet and send him to school in underwear. I packed an extra set of clothes for him and made him use the potty right before we left.  Then, when we got to school I had him tell his teachers that he was wearing underwear, like it was something super special. And his teacher turned to me and said, "Oh, he uses the potty all the time."
What?! The kid peed in his pants two times on Monday and again yesterday. But he uses the potty at school? All the time?
So apparently he is potty-trained, just not at home. Why is he peeing in his pants at home? Is he marking his territory? Is he trying to punish me for all of the time-outs? Does he just assume that it is okay to pee in his pants at home because Mommy will take care of it?
His teacher told me they've been wondering why I've been sending him to school in diapers. It's because I've been outsmarted by a three-year old.