Oh the roads I've traveled........
It's simply not possible to miss the word "Salty" appearing on an array of T-shirts!
I've seen it used as part of a religious message: Matthew 5:13
I've seen "Simply Salty"
Then just yesterday a shirt caught my eye in my local Walmart: In A Salty State of Mind
I finally gave in and headed for the urban/slang dictionary:
Salty - a cringy way of saying angry or pissed off
Works for me!