swimsuits??

So on Friday I babysat 3 kids ages 2, 4, and 6. (she has a 4th on the way!)   They have had a little fish pond behind their house for as long as I've been keeping them.  I didn't ask why, but on Friday they had people coming to remove the pond.   These were the stereotypical laborers (I know, I shouldn't say that), and it was a very hot day.  After about 30 minutes of moving rocks to the side yard, the big guy needed to take his shirt off.   And when this happens, I can't help but wonder why they never have pants/shorts that fit (stay up).  Well, the big guy needed lots of water.  He kept knocking on the door asking for more.  The 6 year old girl is very into her artwork, so she spends most of the day sitting at the kitchen table drawing.  Of course, the fish pond and the back door open right up to the kitchen.  I did my best every time to shield her from seeing him.  In my mind I thought, if I don't want to see this and think its nasty, I know she will.  The more I thought about, though, I realized that kids don't really pay attention to the same things adults do, so maybe she wouldn't notice that most of his backside was hanging out of his sweat soaked shorts.  I got a little more lax in my shielding, and about the 5th water break I hear "Why are the pond men working in their swimsuits?"