Originally Posted by Plan9

I fail to see the problem. Masturbation is masturbation, right? It's not like you can only do one thing one way. If your goal is orgasm, then fiddle the hell outta your clit and curl a finger inside to hit the LAUNCH button. I've had partners with zero internal sensitivity that required manual clitoral stimulation to get off and I've had partners that require both internal and external to really go off like a "frog in a sock." When I'm using my tongue like a speedbag below the belt line, I almost always have a few fingers doing something down there, whether it's stroking the labia, tickling the ceiling, etc.

Changing genitals for a moment: "Hey TFP, I can't masturbate without touching my balls." Okay, so touch your balls. It's not a crime. Do what feels good.