What's the best way to say to customers, "I don't want to tell you how business is going?"?

When they ask you how buisness is going just say ''ohh dont get me started on buissness goodness you try running a buissness 24hous and youll know know how it is '' and then end off with a chuckle and they chuckle back that way you wont have to make a big scenne about it.