But part of bring up strong resilient children is surely teaching them that there are some people in society who need more care and protection and part of that is not accepting terms of abuse even as a joke, because even though personally you may not be offended, there may be others who will suffer.
grannypiper your nephew and his friends have grown up in a more understanding society, if you were to ask older men about the same words I suspect the answer might be different.
What is a reasonable minimum spend for an online grocery delivery??