News flash: Facebook isn't cool anymore. At least that's what the arbiters of taste, American teenagers, seem to think.

A new report by Frank N. Magid Associates Inc. found that 88 percent of social media users aged 13 to 17 years old used Facebook in 2014, as reported by Bloomberg. This is a decided drop in the percentage, which was at 94 percent in 2013 and 95 percent in 2012.

In contrast, Twitter and messaging apps are more popular among this age group, according to the report. Anyone who frequents Twitter knows that's not a surprise. How many mornings have you logged on to the social media platform only to see top tween stars dominate the national trending topics, from One Direction to 5 Seconds of Summer to Little Mix? Let's not forget about how youngsters were able to make #AlexFromTarget an overnight sensation. Grown-ups may like to think they're in charge, but it's really teens who are ruling the social media world.

This isn't the first time we've seen results like this, and Mark Zuckerberg has said in the past that Facebook's data doesn't support those claims. Still, Facebook has been busy over the last few years diversifying its portfolio with apps seemingly targeted toward a younger audience, such as acquiring Instagram, launching its own messaging app and purchasing WhatsApp, Inc.

One reason that the report's authors give for Facebook's decline among teen social media users is that teens have lost their trust in the social network. Among those surveyed, only 9 percent said they thought Facebook was "safe" or "trustworthy," compared to 30 percent when describing Pinterest. When you compare the fun factor of these two websites, Pinterest won out again with 40 percent of respondents describing the site as "fun" versus 18 percent for Facebook.

To that last point, younger social media platforms, such as Instagram and Snapchat, may be more fun for teens simply because they are more novel. While there's no shortage of poking, tagging and trending status updates you can participate in on Facebook, there's a certain culture teens have created on these photo-sharing apps that have made them more like games, which could possibly explain why they're more apt to use them over Facebook these days. Time flies when you're having fun, after all.

One trend is "Like for #TBH" on Instagram where, if you like a post, the author of that post will tell you something honest about yourself. There's also just the fact that hashtags are an integral part of platforms like Instagram and Twitter, whereas they haven't really taken off on Facebook. They're a way to add some personality to the photos and a good way to gain some Likes. And of course, they seem to cater even more to the teenage appetite for attention and social acceptance.

 Everyone else is doing it lol sooo... #likeitup #tbh #doingall #inyourdms #doubletap #likefortbh (:

A photo posted by Shyla♡✨ (@shy_regusci1) on Dec 12, 2014 at 6:56pm PST

But really, as we all know, once you get that friend request from your grandma, it's over.