Siblings Piggy-back

I had a half hour at home today between work and school meetings - while I grabbed a quick bite to eat, my oldest grabbed a ride on her younger brother's back - the one who's now taller than she. It was fun to see them horsing around! And rare to get a smile out of my nearly 15-year old son. But I told him I didn't believe he could carry his older sister - and he was proud to prove me wrong :)