Technique vs problem: If a guy's penis hits a wall at 4 inches, that could be normal or maybe not. To see if technique makes a difference, the woman can go on top and control all the movement factors. She should be able to see how far the penis can really go, if she is on top and in control. If the penis still hits a wall, it's time for her to see her primary care doctor or an Ob-Gyn to check for a short vagina.
Answered 8/14/2016
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