Today mommy is going to work.
Mommy only works a few days a week - on the days when daddy ISN'T at work. Which is why today, daddy is going on your class field trip HAHAHAHA and mommy is going to spend the morning serving up breakfast and sunshine, sipping coffee and chatting with other grownups. And getting paid for the privelege.
So you have fun on that bus ride with daddy, along those wind-y country roads. Boy, I sure hope no one throws up this time.