She transports her entire living room set to the father's house, just so that she could hold a pipe to her mouth and be clever.
The way her parents deal with her admission of pregnancy is absoultely unrealistic and pathetic. Instead of being angry or upset, as would usually be the case, it's more a case of, "so, what are you going to do then, yeah?"
The fact that she gives the baby away to Jennifer Garner in the end, instead of accepting her responsibiliy does not send out a good message to other youngsters watching the film. They'll think they can just get preggers and hand the baby over to some thirty-something-year-old with a mansion, who'll look after the baby, and love it like their own.
STRAB don't exist in this movie. Youngsters might think the only risk is that of pregnancy - they don't even mention STRAB at any point.
Overall, I think the movie failed on all fronts. You can say that it's okay to send out the wrong message, because it's a comedy, but I only laughed once - at the character's full name - and that's it. I felt the film was a complete hypefest, and was only given the attention it didn't deserve because of the weird name of the person who wrote it, and the "cool" soundtrack and the "cool" design to it. That's it, though. I found it to be less than average overall.