The self-wheeling wheelie bin

It was bin night last night and so I had to wheel the bins back in this morning. As I trundled them towards the back of the garage where they live during the week, the two little boys (by "little", I mean under five - I don't think they've started school yet) who live in the house behind were playing in their back yard. They heard the bins rumbling over the lawn and ran to peer through the fence at the commotion.

Boy 1 (excited): There's a wheelbarrow coming!
Boy 2 (even more excited): No, it's a rubbish bin!

The bins and I loomed closer.

Boy 2 (disappointed): Oh, there's a lady pushing it.

They walked away sadly. I was very strong and didn't laugh.