Congrats
Congrats is a term used to sarcastically congratulate someone on an achievement, such as atrocious behavior, a hideous style of clothing, or the amount of likes someone receives on an Instagram or Facebook photo which they probably paid people to like. "Congrats" is another way of telling someone that they are a fuck.
Example:
Girl 1: I'm having a party, but you're not invited.
Girl 2: Congrats!
*Girl walks by in high-waisted shorts*
Guy: Congrats on your high-waisted shorts that don't even cover your ass!
*Scrolling through a girl's Instagram or Facebook newsfeed*
Girl 1: Congrats on your 100 likes on your photo!
Girl 2: Congrats on your pounds of makeup!
Girl 1: I'm having a party, but you're not invited.
Girl 2: Congrats!
*Girl walks by in high-waisted shorts*
Guy: Congrats on your high-waisted shorts that don't even cover your ass!
*Scrolling through a girl's Instagram or Facebook newsfeed*
Girl 1: Congrats on your 100 likes on your photo!
Girl 2: Congrats on your pounds of makeup!