I actually loved it...
I'm not really too sure why this movie has been vilified the way it has. I pretty much laughed constantly from start to finish. In a lot of ways, it's just like a classic Sandler comedy. A socially inept, maybe even borderline retarded character, is thrust into a world he doesn't quite understand, only to end up conquering that world through unconventional means.
To me, if you liked Billy Madison, Happy Gilmore, The Waterboy, etc, you'll probably love this one too. And "Bucky" gets to go much further than any of those because of the R-rating.
On top of all that, the entire cast is hilarious. Absolutely fantastic.
I get that a lot of people think movies "like this" are stupid. But all these guys want to do with this movie is make people laugh! Unfortunately, no one is seeing it because people seem to have so many *beep* things to say about it. So, my advice is, if you just want to enjoy a dirty comedy and have a good time, give this movie a shot. If you're looking for something other than that... well, then, you really have no business giving everyone your opinion about this film in the first place.
I think one of the most important elements of good film criticism is to (at least TRY) to review from the perspective of the target audience. In this case, it seems like pretty much everyone has failed to do that.
Anyway, the point is, I think "Bucky" is really *beep* funny.