I will also own up and say I've been the same lately...

DD pushing the limits alongside DS who has like 8 teeth coming thru at once, add that onto the stress of my work, flu, losing Mum, moving house yadda yadda - I've been losing it at the kids too. They just know the buttons to press eh?

I've always made a point of apologising afterwards and getting a kiss and cuddle afterwards. Although she probably has no idea what I'm dribbling about lol!