Quite a few years ago, before I was out to my wife, I spent some time outside in a vee-neck top. The next day I got in the shower and discovered a very revealing sunburn that pretty much showed the top also had short girly sleeves. It was quite a while before I could swim or not have a top off with the lights on.
Since that day I've come out to her, but I've also become a fan of sunscreen. Especially for my feet when I go out wearing strappy sandals or anything lacy on top.
Have you ever had something unexpected give you away?