#13: TikTok Is Strictly Prohibited
Many younger people like to make fun of older generations for their aversion to new social media platforms. However, this specific sign should be understandable to people of all ages. So many people were using TikTok inside this mosque that leaders had to make a permanent sign banning it. What a bummer.

Mosques are sacred places of worship. It should be common sense that watching an endless stream of funny dance videos inside a place of worship is extremely disrespectful. However, a few disrespectful people were too addicted to the app to simply put away their phones for a few hours. A little common sense goes a long way.