 Roly Sussex of The Courier @-@ Mail wrote that " have a nice day " can sound " a touch brusque " in comparison with " you have a nice day " . Deeming the word " you " as moderating the imperative , Sussex stated that the word " you " causes the phrase to seem like a mixture of a command and a hope . He wrote that using " you " in imperatives is more common with people under 25 . In her 2001 book The Facts on File Dictionary of <unk> , Christina <unk> wrote about the growing usage of " have a good meal " in restaurants . <unk> opined that the phrase " induces teeth @-@ gnashing irritation when voiced by a particularly incompetent waiter " . 
