A foot wank before going to the family reunion

How can I say it kindly without offending my family? We remain on the theory that my family is special. Dealing with them is not an easy task, then every time there is a family meeting, my husband suffers a lot. I am very sorry for him, but I can not do anything to prevent this kind of encounters. But there is one thing I can do: give him a reward every time it happens. Before and after. Usually I like to wear black underwear and dance sexy for him. I love being his bad girl. I like to talk dirty with him and be his whore. Sex forgive all, and he is always grateful whenever I jacking off with my feet.