Hey Congrats. Now you got to get one of those tweed jackets with patches over the elbows for when you are smoking a pipe on campus. At least that's what I've seen.
I believe that "sipping" is comparable to sipping through a straw while drinking, it's a similar technique. Like if you want a lil sip have a sip, if you want more smoke sip a lil harder but with the same technique of drawing through a straw.