"Cared stiff" is likely a misinterpretation or a typographical error of the phrase "cared for." In a more colloquial sense, "stiff" can refer to someone who is inflexible or unyielding in attitude. If you meant a different phrase or context, please provide more details for clarification.
stiff
To get a Stiff, or Stiffy, is school playground giggles for an erection
To jump with stiff legs means to lock your knees.
Stiff
Short,stiff hair
Short,stiff hair
stiff or made out of wood
beloved kept
If you mean the foreskin getting stiff, you need to clean your head more and maybe start gently masturbating If you mean your whole penis getting stiff it is because of the blood rushing to it when you become sexually aroused...
strong or potent to the taste or system, as a beverage ormedicine: He was cold and wanted a good stiff drink.
drawing Circles
To become or make stiff or stiffer.