ATC

The internet slang term/abbreviation “ATC” stands for “all the cool.” It is commonly used to express admiration, excitement, or appreciation for something or someone.

Examples:

1.

I finally got tickets to the concert tonight, ATC! I can’t wait to see my favorite band perform live!

2.

Just tried out a new restaurant in town and the food was ATC! Highly recommend their delicious burgers and fries!