Salty = Salt of the Earth sort.
A seasoned man, wise beyond his years, who is earthy, witty, pungent with manliness (salty if licked) and able to kick some ass should the situation renders itself necessary (like a drunken sailor).
Think: Lenny Kravitz, Bono, Benicio del Toro, Goran Visnjic, Diego Luna, Harvey Keitel
Do not think: Brad Pitt, George Clooney, Adam Sandler, Jim Carey
Salty Women include: Madonna, Cher, Mae West, Joan Jet, Queen Latifa