Underneath the over-the-top comedy is a message about learning to appreciate what's really important, rather than chasing someone else's glory. That said, this movie isn't about imparting life lessons.
The violence is played for laughs, but it does get pretty bloody. There's gunplay (both real and fake in the world of the film), with bloody wounds. There's an extended fight scene in a house, a bloody fight-club scene (where rich people pay poor people to fight each other), and a few instances of people being violently struck -- including one person being hit by a car. Someone gets knifed. In one scene, a bleeding wound makes a significant mess. A man gets sucked into a jet engine and puréed. (Again, this is all played for laughs.)
No sex is shown, but sex acts are discussed -- all to comic effect. Kissing, groping, masturbation joke. A character's attempt at performing oral sex on himself is prominently mentioned. Discussion of sperm in the context of fertility (fertility treatment in general is discussed frankly). Brief mention of body parts in a sexual context. References to promiscuity.
Frequent but not constant strong language includes "f--k," "s--t," "ass," "d--k," "pr--k," "goddamn," "hell," "son of a bitch," plus "Jesus Christ" and "oh my God" as exclamations.
Material success is definitely admired in the film, and a particular high-end collector's sports car is fetishized. Certain brand-name games are featured (Jenga, etc.). Tostitos likely had a product-placement deal.
Drinking, Drugs & Smoking
Minor drinking at a party for adults. Quick reference to dealing heroin that isn't explored further.