1. American Born Chinese, see CBC
. Or any other country starting with the letter A in American's place.
2. Already Been Chewed, referring to chewed gum.
3. A silly way of saying the word alphabet
1. Chinese Girl: "Where were you born?"
Chinese Guy: "I'm an ABC."
Chinese Girl: "Oh. I was born in HK."
2. "Did you seriously chew that gum I gave you? It's ABC!"
3. "I know my ABCs like the back of my hand.