I have discussed by method of reducing the risk of STDs in my blog of that name. But I left out an important point. Screwing a girl bareback also carries the risk of creating a pregnancy. Almost none of the poor class of street hookers use birth control, so it is absolitely imperative that I do not shoot inside the girl's pussy. My commitment is always to PULL OUT for a climax, and spurt over her back or tummy. This, of course, does not apply to anal. But even then, one must watch where the cum drips to, so she is commanded to angle herself in such a way, that the cum can be cleaned off before it gets dangerously close to the pussy.

- just thought I'd mention it, in case you were wondering.

PS: If the girl and myself are well acqainted, it's really great to pull out of her as, shoot all over it, and then go back in for a final finish. DELICIOUS!!! - but oh, so naughty. 

Warning: Once a guy has cum, he is no longer eligilble to safely re-enter the vagina. After a climax, sperms remain in the urethral canal, and are easily dispensed during a subsequent insertion of the penis. This is very unsafe practice. A condom would then become obligatory if she is not protected.