Since I was about twelve I have only been able to achieve enjaculation via applying pressure to my penis and testicles through leaning on an inanimate object and rubbing on it such as the arm of a chair. This has caused me get concern as I developed a testicular cyst which although the doctor has told me it is not harmful I am worried these actions may have caused it? I am also wondering if this is the reason I cannot ejaculate during intercourse or attain orgasm through conventional masturbation.