I am from india. it doesn't matter in what position a man is having sex with a woman, the only pathway for semen or pre-cum to come out of his body is through his penis only(eg: can't come from his mouth). sure,right?

India, Indonesia,...: Whether you're from India, Indonesia, or Indianapolis, semen only flows naturally from one place... the penis. That said, if a person got semen into his mouth, he could then move that semen from his mouth to other places... but probable only for a few minutes or certainly less than an hour (by that time, there likely is no semen remaining in his mouth, or the sperm are no longer swimming).