Hermit Mode
Hermit Mode is a period in anyone's life where depending on a situation you lock yourself away without telling anyone.
Usually in Hermit Mode you restrict yourself from social networking sites and people in general.
There's many reasons why you'd go into hermit mode such as depression, anxiety, boredom of company, stressed or he/she may haw studying to do but end up playing games anyway.
Basically when people/friends learn this phase every so often, they realise that there's no point trying to talk them out of it, and no point trying to see them.
The dark mode challenge is a funny internet challenge.
All you need is a car and night.
You have to wait for the night, turn off all lights in and on the car and drive 20 km at atleast 100 km/h or 30 km at atleast 60 km/h.
If you completed the required kilometers, you have mastered the challenge. Now, you gotta upload a video of it on Tiktok.