Well, my day had not ended, even though I tried... decided to make myself a sleepy tea, finish the final chapter of the book I was reading, play a game, and settle down to sleep.
Forgot to drink the tea and it went cold, got undressed for bed, turned back to see a large WASP sitting on my pillow.
Oh great. Just what I needed.
Searched for the fly spray and sprayed it all over my pillow, very hygienic. I still don't know where the wasp went or if it's dead, or maybe it's just waiting.