Timber!

Rand has always been on the tiny side to begin with. Now that he's wearing underwear more and more, it's hard to find pants to will stay up. I thought I'd found a pair that worked so we could go outside to get the mail.

Rand started running ahead of me. I could see his pants starting to slip down. He stopped quickly and yelled, "Pants fall down!" I caught up with him and said, "Uh-oh! Let me help you." Rand replied, "Timber!"