Help! Just spent a nightmare few days with my in laws. Usually great fun but this time ds was awful. Felt I was putting him on the naughty step or telling him off all the time. By day two he had switched off the aga at the mains (rendering the house freezing and the dinner raw), pulled the cats tail (several times) broken grandpas £300 specs and generally rampaged around the place causing mayhem. Beginning to realise that I have not a clue what I am doing and am lying awake at night imagining how much I am screwing him up by not being able to discipline him. I'd really appreciate any advice on this kind of behaviour and dealing with it.