2. Jackass Movies
I couldn't think of a specific genre this could come under but, the Jackass movies are extremely popular yet not a lot of people openly admit to liking them. They are really stupid movies; they're gross, juvenile and are borderline abusive at some points but there is something about them which makes them pretty funny. Maybe it's the fact that they're all good friends in real life and they're all clearly having a good time in the films! Maybe it's their use of music, editing and slow motion to dramatise farts that makes it funny? Critics tend to loathe Jackass, signalling their success as the beginning of society's downturn - the fact that Jackass then use these quotes to promote their films undoubtedly infuriates critics. If you have a ratio of approval from critics to box office profit, Jackass is probably up there with the greatest gap between the two. If you criticise a rom-com or a stoner comedy and say its juvenile nonsense and your friend turns round and says 'wait a minute, don't you love the Jackass films?' You look like a jackass so that's why they are guilty pleasures.