Some of them are annoying, and some of them I don't have a problem with.
The mannequin challenge was cute and made Closer lose it's #1 spot.
Then there are the weird challenges. I heard about this one called "Andy's Coming" where somebody shouts Andy's Coming and then everyone drops down on the floor. The Kylie Jenner challenge was horrible as well.
Also yesterday I saw this challenge on Twitter called the #GreySweatpantsChallenge where you stick big objects in your sweatpants and take a picture

The only thing I wanna see in grey sweats is a *****!