I think I’ve jinxed the weather

At the beginning of July my daughter and her fiancée went on holiday so I stayed at her bungalow to look after her pets – currently three rabbits, two guinea pigs and eight budgerigars.
She lamented the state of her lawn which was so dry that the grass was beginning to go brown. On the way back from taking B and C to the airport I called in at the local supermarket and bought a watering can. I watered the lawn with a good many cans hoping that they would return to a revived lawn. The rest of that day was gloriously hot and dry.
The following four days the rain was torrential and when the dry weather returned it was much cooler and so the grass did not suffer. When B and C arrived back in the UK they had green grass and a watering can that had been used once - it seems to be surplus to requirements - and the weather has remained very rainy.
As if to rub salt into the wounds, the identical watering cans are now half price!