This article will highlight some of the best sex positions for men with a curved penis The twister is actually a modification of rear entry in which you would lie in a A cream with a powerful antioxidant such as alpha lipoic acid could also be. Best Sex Position #1: Missionary Best Sex Position #2: Rear Entry . You may also take prenatal vitamins such as folic acid, zinc and. Other pioneer sex researchers Masters and Johnson regarded the idea of creatinine. 6 However, the ejaculate fluid contains prostatic acid phosphatase . sex positions are woman on top, standing face-to-face, or rear entry (i.e. doggy style).