The idea that what others do in private requires or is any way interested in your "endorsement" is not only bizarre. It's actually what I would call perverted or abhorrent.
I am thinking about including my endorsements into every-day conversations, they are a biographical fact I don't think people can do without:
"Despite you and your wife both being quite fat, Sir, I must say you are both very fine people. I will allow for you to carry out sexual acts even though I cannot endorse them"