YSK

When you're discussing facts, feelings, and anecdotes, YSK stands for "you should know." This acronym precedes information someone else thinks is worth sharing.

For example, a friend who has set you up on a blind date may text you just before the date and say "YSK, Ryan had kind of a bad day at work. But he's still excited about tonight!" YSK is also commonly used on Twitter and Reddit, especially in the r/YSK subreddit.