Debt parking is when friends or extended family ask to use your home's address to have their bank/credit card statements sent to. And also any other debts they want to dump. They then max their cards to the hilt and do a runner, leaving the debt collectors and bailiffs knocking on your door demanding the money!
Leyton: Man, remember that dude Rick?
Mike: Who, da nigga you let stay at your den a few months ago?
Leyton: Yeh man, next time I see him he's gonna get smoked for sure.
Mike: Why? Whad'de do?
Leyton: He parked his debts here and last night I had da Mafia kicking down ma door!
Mike: Ah man, debt parking sucks!