I had an LMR problem recently. In fact, we were in our underwear on my bed and she was balking. So I told her, "That's OK. My body is a little shy and I can never get it up anyway the very first time I'm with a girl. I've always been that way, it's just my nature." She took that as a challenge, wanted to be the first girl to get me up on a first encounter, and she immediately went right for it. I still can't believe how well that one worked.