To allow users to opt into and opt out of seeing restricted content (such as not safe for work or otherwise login-restricted content) we offer users the ability to opt-in and opt-out.
NOTE: This requires you to be logged in.
Enabling restricted content:
1. Click your username at the top and click "settings"

2. Click the "content" tab on the left hand side

3. Enter your date of birth:

4. Click "Show NSFW channels in the video list"

Click "Save changes"
Disabling NSFW content
1. Go to "Settings" > "Content" (see above)
2. Uncheck "Show NSFW channels in the video list"
3. Uncheck "Show NSFW channels in the browse list"

4. Click "Save Changes"