3. I Still Know What You Did Last Summer
Here's where we get to truly lazy film-naming, and in the instance of the inane sequel to the horror hit I Know What You Did Last Summer, it sounds like whoever actually decided on the final title hadn't even seen the film or read the script, because it's completely at odds with the most basic elements of the story. Set a year after the first film, that would of course mean that the killer doesn't still know what happened last summer, but in fact what happened two summers ago. Granted, it's pretty challenging to come up with a title that fits with the original film; I Still Know What You Did Two Summers Ago? It doesn't exactly roll off the tongue, though that's probably the first of many signs that bothering with this sequel was a terrible idea. Even if it had a beefier, more sensible title, it's still a braindead sequel and one of Hollywood's most cynical horror flicks.