Have you ever been in right at the edge of climaxing from jerking off, what is to be a pleasurable experience, and then a non pleasurable intense sensation of a charlie horse is triggered? This has happened about 15 times or so in my life, it occurs behind my left calve muscle. I also know sort of know what triggers it; often when I am about to blow, I begin to arch my feet back and forth as those muscles run up leg to my inner thighs/groin which assists in providing a more intense orgasm. So finally, the question, anyone else experience this? I bring it up as last night waa the best jerk I had in months, however, my left calve hurts like fuck today from the pain lastnight.