Reference to Philadelphia's location and status as the nation's second largest burned out ghetto/city. Detroit is clearly the reigning champion of ghettoness.
Pour gun powder into your partner's ass. Repeatedly fist their ass til the powder is packed tight and deep like a good ol' colonial cannon. Stick a wick in your penis shaft. Light the wick. Plunge your cock into your partner's ass. CUMBOOM!!!
I used a DelawarePowder Mill to get some other guy's condom out of my wife's ass.
Jill: I gave Mitch anal for his birthday last night.
Jane: Wow! That is really generous of you.
Jill: Not really, he has a Delaware Boner
Jane: Wow, that's like getting a pair of Jimmy Choo heels for the price of Nine Wests!
Jill: OMG! I LOVE SHOES!!!
Jane: Totally, I am so wet now.