One of the most 流行的 ways in which young people try to prevent pregnancy is withdrawal (also known as the "pull out" method), where the man withdraws his penis right before orgasm and ejaculates outside his partners vagina.
it seems logical right? if the man does not ejaculate inside the vagina, there will be no sperm there right? WRONG!
how can this be? in order to understand why we must first understand some basic male anatomy. we all know penis, testis, scrotum and prostate gland but few people (including most men) are probably aware of the Cowper's glands. the Cowper's glands are two pea...
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