When I get the "Have a nice day" from the CC I'm always tempted to say "Thank you, but I have other plans." At least HAND doesn't require an answer. Around here the mantra seems to "and how has your day been so far?"
Mind you that can lead to some interesting conversations. I'm sure I've told it before but at the risk of sounding like an old fart (well I am actually

) here it is again.
Conversation at Woolies checkout.
CC ... and how has your day been so far?
me .. not so good I just found a snake in the bird aviary
CC .. oh what did you do?
me .. I hosed it, I've discovered they don't like to be hosed and will move on.
CC .. I've heard that works with crocodiles too.
me .. I hope I don't find one of those in my bird aviary
both of us ...
then me walking away wondering if anyone has ever tried repelling a crocodile with a garden hose, ummhh.
We're 'different' in Ipswich.