Used to show something is not funny or showing its kinda awkward.
Example 1
Person 1: HAHSHKFHSHFDK
Person 2: 😐
don't say 😐 to someone who says HAHASHJFSHKFH they're just laughing.
Example 2:
Person 1: hey wassup
Person 2: hey
Person 3: i farted
Person 1 & 2: 😐
C'mon man, you're that bored? You really looked up doo doo? Incase you didnt know, it means poop, poo poo, shit.
Kid: Mom the dog took a doo doo!
Mom: ...What?