The F Word

In the theater version of The Hangover this is how this scene played:

Stu Price: They are mature. You just have to get to know them.
Phil Wenneck: [yelling from outside] Paging Doctor Faggot! Doctor Faggot!
Stu Price: I should probably go.
Melissa: That would be a good idea, Doctor Faggot.

However, I just watched the movie trailer and this is how the scene played:

Stu Price: They are mature. You just have to get to know them.
Phil Wenneck: [yelling from outside] Paging Doctor Douchebag! Doctor Douchebag!
Stu Price: I should probably go.
Melissa: That would be a good idea, Doctor Douchebag.

I guess you can't use the "F" word unless it's in an R-rated version? I am glad for that. I'm also curious what's on the unrated DVD that came out on Tuesday. Has anyone watched the unrated version?