My wife hadn't ever masturbated when we got married. Still doesn't, to my knowledge. I kidded her about being so inexperienced, but she thought I was an awesome lover from day one 'cause she had nothing to compare to. (I was pretty awesome, I'm sure, but I'm even better now).
This thread reminds me of a buddy in college who asked me why an orgasm was compared to being sort of like a sneeze. I just looked at him and said, "Um, you've sneezed before, right?" He said yeah. "So, you've had an orgasm before, too, right?" He wasn't sure about that one.
I left him with some pointers on how to get there (thought about offering to show him the way, but decided against it), and left it to go for it. For the next two years, his nickname around the dorms was "sneezy." Hmm...wonder how that story got around campus.