It's been a pretty bad day today all told, first with my head injury which left me woozy and sore for most of the day, then nearly falling to my death in my grandparents garden... a leg tangled in a tricksy rhubarb leaf, a five foot drop onto concrete... my grandfather's superior balance and reflexes saving the day.
So, while she was relaxing with a book in the bath, I burst into the bathroom shouting, "I'm not looking!!!" and threw a handful of.... tomato tops at her. You know the crinkly green leaves which at first glance look like huge spiders? As soon as they hit her there was a flurry of curses and squeals. She was not impressed but is having a joke about it now.
I don't expect much comeback either... she knows I can be more inventive in terms of nasty shocking pranks when I need to be...just in case though. I've set her up to think there is another, more unpleasant surprise waiting for her tonight if she disturbs me. Psychological deterrents work very well on her.