Every time my son has a playdate, he goes mental, and I mean rediculously excitedly crazy. All his normal behaviours go out the window and he runs around like a bull in a china shop, throwing toys, jumping off furniture, manically laughing and generally trashing his room. It's getting embarassing as the guest looks slightly scared. I've had to resort to almost reducing my son to tears by constantly asking him to calm down, putting him in time out etc. Now I've had to threaten no more play dates (which I have done before, which works for the next playdate, but then it goes back to his same antics) Also it's worse when some particular boys visit, like he's trying to impress them by being so naughty. I don't know what to say to the parents 'sorry but when your son visits, my son turns into a lunatic?!' probably won't go down too well. Not sure what else to do, or whether other experience this?