A great, big, beautiful may bug flies into my window with a huge 'thunk', bangs it's head, falls onto it's back on the windowsill, wriggles around waving it's legs looking like it feels useless, and eventually wiggles itself off the windowsill and onto the ground.

I wait. It's a may bug after all, they're not known for their brains.

It then proceeds to complete the whole process again.

"Excellent." I think. Silly, noisy maybugs have arrived. Summer is obviously nearly here."

Later I look in my book to make sure it is a may bug, even though I know it is. This is what it says:

The cockchafer (may bug) is one of the more familiar of the beetles, thanks to its habit of flying noisily about on warm early summer evenings and crashing into windows.

Ha!