Maids' house is the dirtiest

I have a saying that I tell my husband pretty frequently and I am curious if I picked this up somewhere subconsciously or if I actually came up with it on my own (which would really surprise me because I'm not creative at all). I say, "Maids' house is the dirtiest".  In a sense this would  mean  that a maid spends all day cleaning and therefore the last thing she would want to do when she gets to her own personal space is clean, but I  use it to imply that a persons' profession is the last thing they want to do once they get home (i.e. the last thing a plumber wants to do is go home and have to fix the leaky kitchen faucet, the last thing a car repairsman wants to do when he gets home from work is give the car an oil change, etc). My husband fixes computers and when mine messes up  it takes weeks to get him to come around to fixing it so I  always  say,  "Maids' house is the dirtiest". Is this something that's been around a while or am I more creative than I give myself credit for? Thanks for you help!