Mad; angry or easily fired up.
You're so salty
I'M NOT SALTY PETER
Being so butthurt about something you are seething
Emily was so salty about having the frisbee stolen from her
Being mad/upset because someone is better than you at a video game or kills you
This kid Hayden is salty because blakes better than him
Basically CharaIsGod
wOW! you should stop being like CharaIsGod, you're so salty!
Basically CharaIsGod
Wow! Stop being like CharaIsGod, you're like so salty today!
A term in the military, particularly the United States Marine Corps that generally describes a Marine who gives ZERO shits about anything and/or close to ending their military service.
Boot Cpl: Hey Lcpl Shmuck, Ssgt needs you for a working party.
Salty Lcpl: Fuck you, go do it yourself you POG ass boot.
Boot Corporal: Aye Aye Lcpl.
Salty Lcpl: "Puts on shades and drives off into distance"