With me, it's always my husband and our mutual friend. We all know what to expect and we all know how to go with the situation. As the bottom, I just prep knowingly what is going to happen. Just do it once per encounter as I will not be able to do much afterwards. The feeling of the three of us touching kissing and caressing gets me off. It is one aspect of the entire threesome as it is a buildup to an overload of sexual feelings.