Medically you need about 2 inches of penis to satisfy your female partner. It is because only outer 2 inches of vagina has sensations so when going in & out of vagina the head of penis rubs that outer area , then it gives pleasure & sensations to male & female both. So what ever size of penis you have more than that is a bonus to you.
Answered2016-03-06 20:56:07
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