Some years ago, I was in bed during the early hours of the morning when the sound of a bumble bee, trapped inside the glass of my bedroom window, woke me. Unfortunately, the frames of the windows on that side of my bedroom are rotten, so I never open those windows (for fear of the glass falling out). So I couldn't simply open the window where the bee was located. It took me ages to help the bee through a (far more solid) window on the other side of the room.
An hour or two later, I was awoken by more buzzing and had to repeat the whole lengthy performance before going back to bed to try to enjoy a lie in.
A couple of hours later, I was again woken by the sound of buzzing. I got up once again to help a bee on its way but, despite several minutes looking for it, I just couldn't find it at all. It was only then that I looked through my bedroom window, rather than at it, to notice my neighbour strimming his lawn ;-)