A long (seems longer than 100 minutes), manic and extremely tedious movie about an extraordinarily obnoxious group of people who evidently are supposed to be funny but are only annoying. The most obnoxious actor and character by far is Desmond Askew as Simon, and his namesake middle segment - about four morons in Las Vegas - is the most irritating.
The ONLY ten minutes worth watching in this stupid movie are a hilarious Christmas dinner involving characters played by William Fitchner, Jane Krakowski, Scott Wolf and Jay Mohr and a tiny but delightful bit with Melissa McCarthy. Both of those scenes are in the final "Adam & Zack" (Wolf and Mohr) segment, which would have made for a good end if only some of the morons from the insufferable "Simon" segment hadn't reappeared and dragged the movie back down into stupidity.
Maybe you need to be a Tarantino fan to appreciate this movie. The 17-year-old straight male goons who have taken over movie theatres probably loved it - especially the middle segment about morons just like them. Except for the scenes with Wolf and Mohr, which seemed like a different movie, I hated it.