How do you make more semen come out?
Is this a serious question? You masturbate. You touch your penis and either watch sexual scenes or imagine them until you climax and then semen will come out. Or, you can put spit or pee on your glans and rub your foreskin up and down. if you feel queasy, continue. your penis will probably pump itself, and semen will come out. It's the white sticky stuff you wipe up with a tissue... Hope I helped!