Let’s say that it’s april fools day (yes we are late). Your buddy plays a prank on you early in the morning that wakes you up. after you finish screaming, you’re annoyed that he woke you up. Now you’re salty.
When someone is salty, they are annoyed at someone or something because of something small, and it puts them in a bad mood.
Friend 1: “Pulls prank on friend”
Friend 2: “What the hell!”
Friend 2 is in bad mood for the rest of the day
Friend 1: “Don’t be so salty yo!”