For a bit of background, DH was away to watch football last night. He was at work during the day, so it was just me and the 3 kids DS(6) DS(1) & DD(1) all day. The babies had their jags last week so have been pretty grisly. I hadn't stopped all day.
I put the twins to bed, and last night it took over two hours to get them settled, DS(6) interrupted a few times which prolonged it, mentions something about doing chores
I tell him we will talk about it when the babies are asleep.
Come downstairs to find the living room floor is soaking, the kitchen floor is swimming. Asked DS what chores he had been doing. "Mopping of course" well I was pretty annoyed and then he says "I cleaned the BBQ as well" asked him what he used to clean the BBQ... The mop of course
... So I went in to the kitchen to start cleaning up and then it hit me... Where the fuck did he get the water from.
When I asked him, he says the bucket in the kitchen.
[That would be the bucket that is soaking shitty baby suits after a couple of explosive nappies] 
So my whole downstairs was covered in shitty water, as is my BBQ!
I went potty demanding he tell me everywhere he went with the mop and telling him not to touch it ever again. I literally could have imploded.
Then later I felt bad because I know he was trying to help and said sorry! AIBU to lose my temper?