Dear service user, Thank you for contacting healthcaremagic. I have gone through your question and understand your concerns. The width and length of penis vary from one individual to another. Slight curvature of shaft of penis r to either side, upside or downwards during erection is a normal thing. There is hardly any person who has 90 degree straight erection. The slight curvature of penis has in fact nothing to do with degree of sexual satisfaction of either partner. Only outer one third and the front wall of vagina have nerve fibers and hence sensitive to stimulation. Rest of inner two third is largely insensitive. So if you want to arouse your partner during sex, you should focus on the areas of maximum nerve endings hence clitoris and inner lips or labia minora, the outer wall and outer two third of vagina. So for female sexual gratification, the size of erect penis could be anything from two inches or more! Penile entry followed by to and fro continuous movements is adequate. For example, if you want to enter a window you can enter from any direction. The entry is important rather than direction. Straight is great is illogical rampant myth. Masturbation is akin to sexual intercourse. What penis does in vagina during sexual intercourse, same it does during masturbation in your folded palm. This is a natural activity and I would say a healthy activity and does not either affect or deter sexual performance. I understand that you do masturbation for last twenty years and ejaculate within few seconds. There is no specific time period defined for ejaculatory delay. It greatly varies from person to person. When one s arousal level is very high so he reaches orgasm quickly and emission occurs. However the ejaculatory control can be achieved by behaviour techniques such as stop-start technique . When clients with similar problems approach me, I recommend them a behavior exercise called start-stop technique. The man starts masturbation and stops just prior to orgasmic inevitability. He allows arousal level to decline and re-stimulates. One should continue this start-stop sequence for about 15 minutes. Later on he may fantasize about partner during the start-stop hence learns to be in the situation when he actually will confront female partner. In this method, man learns to identify or feel the point of ejaculatory inevitability (The point of NO RETURN) and gains voluntary control of ejaculation gradually over a period of time. Hope, I have answered your question. If you have any further questions I will be happy to help. Wish you good health.