Luckily, I guess, we don't have children nor do we have family nearby, considering we do go to clubs occasionally and both of us have friends we see occasionally. No excuses have to be made.
However, we don't go to the club when my nephew is in my custody for breaks and the summer. We usually work it out by alternating newphew prison guard duties in order to seeing our respective friends if opportunities arise.
My sister typically e-mails or calls on Thursday (during Survivor, grrrr...) and asks what we are doing for the weekend. She has been told that we are "alternative"", so I can head all questions off with a "you don't really want to know what either one of us are doing this weekend". Actually, I like doing that.
Everyone else gets the standard truth: "I'm doing laundry and XYZ home improvement project, and if we are lucky, we will go out for a while". Nobody cares what you are doing once you bore them with laundry, I've found.