Saw this as we were approaching our hotel in Kolkata coming back from Kalyani. Unless my Bengali has gotten really rusty, the ad is exhorting one (presumably lady) to not change husbands but change houses.

Well, that makes no sense. First of all, in most cases, I would assume changing your husband will result in a change in your house. So, one does not need to present the two cases as mutually exclusive.

Second of all, what the heck was that all about again?