Frankly, I am not surprised this movie was edited down to reach a PG-13 rating. It is definately not for young audiences, due to the mature themes. There is no graphic nudity in this film, nor any actual depictions of actual sex, but there is a lot of reference to sex (the main character's father is getting remarried, and on the way to the wedding he is still working on the pre-nup and negotiating on how many times his bride-to-be will be obligated to have sex with him per week, as well as references to other sex acts). There is also a scene where, during the bridal shower, a woman (hired mistakingly by the hero thinking she is a tarot-card reader, but she actually sells sex toys/"pleasure toys") sells here wares to the unsuspecting bridal party. A few items are actually shown on screen, albeit quickly for the more graphic/phallic toys, and the bride-to-be's unknowing grandmother buys an item and wears it as a necklace. If you bring children to see this movie, you may be asked questions about what the various characters are talking about, and what the sex toys are. The main character is also an acknowledge womanizer, with a variety of girlfriends/bed-mates, which may also raise questions. In another scene, a drunk bridesmaid throws herself, in nothing but lingerie, at the main character. Finally, there is a scene in a men's gym where several male characters make reference to "size" (no overt nudity, but blurry figures in the showers behind the main action).
A woman lying in bed we see her bare thighs, legs and cleavage, with a man bare chested.
Shower scene contains, a barechested man with other men staring and commenting "it is a monster thing" directed towards male gentials, clearly blurred nude males in the background.
Nude male/female statues, male gentials visiable.