used to express great discontent, dissatisfaction, disappointment, often in a funny way; usually used after someone (including oneself) has done something wrong, committed a party foul, or said something not cool (either stupid or politically incorrect)
the "a" in shame is usually stretched out, making it sound like "for shaaame"
Person A: Sign me in!
Person B: Okay, hold up.
*Person A looks at the sign in sheet*
Person A: Hey, you spelled my name wrong! For shame!!
Something that can never be spoken about.
For Shame dude. did you ever hear don't let the dirty laundry out until you fabreezy that mess first.
For Shame man, I need to get out of this box.