It's necessary for "If U Seek Amy" to get some type of radio edit, so that stations that are willing to play it but don't want to lose their jobs for it can do so. This is just like Black Eyed Peas with "Don't Phunk With My Heart". It's suggestive, and although a lot of songs are, these types of songs push beyond the boundary. BEP only say "Phunk" during the chorus, as Britney only spells out '****' in the chorus.
If they don't have some kind of edit, it won't be played as much as it should. So why be upset that they are doing something to make the song get all-around play, when you already have the regular version?
Suggestive nevertheless, you know it. 
