A person who lives in a poor makeshift locality in extremely dirty conditions like a stray dog.
A person who lives in an overcrowded and poor area of a city in which the housing is unplanned.
2. Every Slumdog dreams of becoming a millionaire; but destiny chose just one out of millions.
This is also a term used for a person that tries to make you flinch and hits you for it anyways even if you didn't flinch...
Biz: Whatever, you're a Slum Dog.
Guy- "Ouch man! This is the last time I come to LAX with you."
Ryan- "You just need to keep your eyes peeled for those slumdogs."