When you're in a chess match, and you're running low on time so the opponent decides to insta-move or premove his pieces to time you out and win. Be faster and don't get flagged!!!
Anish Giri: has 5 seconds on the clock
Hikaru Nakamura: premoves the rest of the match
Anish: Not cool, Hikaru just flagged me!
Hikaru: There chat, I flagged him for content
A trend on youtube which users take video clips and loop them to make it sound like they are saying something sexist, racist or vulgar.
In the Lion King, there is a scene which Pumba says "Home is where your rump rests". Loop it somewhere and it will sound like he is saying breasts. So therefore, the whole video will be nothing but Pumba repeating "BREASTS" over and over again. Most users who upload those videos will title them "THIS VIDEO WILL BE FLAGGED"
Tova: That guy is so hot!
Eliana: I know! unfortunatly he's purple flagged.
Tova: Are you sure?
Eliana: He's in my theater class... with his boyfriend.