You will surely find this interesting!

 Sunday, March 20, 2016
 When you say "in-laws", that doesn't mean you add the plural marker 's' to "in-laws" when you use it alongside a head-word. Simply put, this is what I mean: You can't say "I have three brother-in-laws"; it is: "brothers-in-law"; "sisters-in-law" "mothers-in-law" NB: In the above, "brother", "sister", "mother" are the head-words in these compound words and should carry the 's' plural marker, not "law". e.g. All mothers-in-law should beware of the way they interfere in the relationships of their children (not "mother-in-laws"). I need you to digest this, please.