| 1 | Slide the condom off the penis, keeping the semen inside. | |
| 2 | And, who knows, you just might impress your partner with your sperm know-how. | |
| 3 | Because of the chromosomal difference, my semen contains very little, if any, sperm. | |
| 4 | So the ejaculation of semen goes backwards, up the penis and into the bladder. | |
| 5 | You need to remember that semen can pass to your partner even before you fully ejaculate. |