At 21 months and playing really nicely, so thought I'd chance nipping to the loo on my own.
Somehow, he'd managed to drag a chair, climb up to the work surface and switch the kettle on. Ds1 ran upstairs to get me and I raced downstairs in time to see him lifting the boiling kettle into the air. It was filled to the 2 cups level.
Everyone was OK, but it just shows how easily these things happen. DS1 never was a climber, so I'm having to learn from scratch with DS2.
(DS1 was praised big time for saving his brother and has walked around with a pleased grin ever since.)