As a virgin, I ejaculate immediately even if I masturbate, probably because my glans is too sensitive. I can cum as much as I want with girls, but sometimes I explode when I give a blowjob before penetration... I went to visit my mother's sister who works in the urology department, and she told me, "I have to try how fast you are," and stroked me with a skill I've never experienced before. She thought it was funny that I was still erect after I ejaculated, and she even took my virginity without telling my mother.