no peer pressure is this: "hey man, smoke this joint with us. no?! you wussy. man you're a wuss!" - then you smoke it.
or, by taking your examples: "haha! you're a virgin!! haha, you're never gonna get laid!" - then you forget all your personal morals and bang the next chick you date.
or you feel dumb because all of the people you know cuss, so you start to do it too. makes you feel more like an insider, less like the outcast. makes you think you sound cool or grown up, but nothing is more immature than somone who cusses every other word.
blah, just because you we're a follower in middle school, doesn't mean everyone is/was. yeah, i admit that i did cuss when i was in high school, and broke curfew (but you can't really call that peer pressure, call it raging hormone pressure

). but the first time (and last time) i drank was of my own choosing. not at a party, not with anyone else. wanted to see what it was all about, and it wasn't worth my time, money, or my liver.
later