My sister brought her 5 year old niece (no blood relation to me) over to stay a few weeks ago and I explained that my LO was breastfed and that means that Auntie uses her boobies to make milk for the baby.
My sister was great and helped explain what I was doing and why I was doing it. Also explained that "that's why women have boobies" and that they were to feed baby
She seemed fine with it but when she got home she mentioned it to her dad and he hit the roof! Said it's not right and that i shouldn't be doing it in front of a child 
And that we aren't related so it was wrong!
Now I don't want to open up a debate about breastfeeding in public - this isn't something I've done yet as I haven't built up the nerve (but I think those that do are amazing)
I was doing this in my own home, which in my head was fine and was able to explain fully... how would you /your OH feel if someone not related to you breastfeed in front of your child?