AAVE (African-American Vernacular English). Used as encouragement and support. To agree with someone's actions.
H: "OMG I ACED MY MY MATH TEST!!!!"
K: "as you should!"
AAVE (African American Vernacular English). Agitated, aggresive, angry.
K: "What's up with S recently?"
H: "Yeah, she's aggy as fvck..."