- if a man goes around having unprotected sex with only virgin girls does he end up catching an std?
2) how does some1 end up getting a std i know you get it from having unprotected sex wiht some one who has it but how does that person get it originaly?
It's possible to catch most STDs other ways than by sex, so the fact that someone has never had any sex doesn't guarantee that person has no STDs (though sex is the most common way they are transmitted). AIDS can, as we know, be transmitted through blood contact, and so can many other STDs. Syphilis can be transmitted by birth. Genital warts and herpes require only skin contact to be transmitted.
Don't forget also, that someone who calls her/himself a virgin may still have engaged in some form of sexual practice that can pass STDs on.
For the answer to your first question, watch the movie Kids.