I have this theory that Angela's parents were hippies and that she was conceived in a VW microbus. She may appreciate Creed on a purely subconscious level, but probably has learned to suppress her subconscious to her will at this point.

Author's Response:

Interesting.  But it's the Martin family who has the expression about Philly which translates to "check out the slut."  I wonder if they were hippies who then became really judgmental religious people.  There's an a cappella song by The Bobs called "First I was a hippie, then I was a stockbroker, now I am a hippie again."  http://www.bobs.com/Lyrics.cgi?First_I_Was_A_Hippie_Then_I_Was_A_Stockbroker_Now_I_Am_A_Hippie_Again (I don't know if that will work)

So maybe Angela's parents are still in their "stockbroker" phase.  They may even have known Creed 'back in the day.'  As a matter of fact, keep this quote in mind: "In the sixties I made love to many many women, often outdoors, in the mud and the rain. And it was possible a man slipped in, and there would be no way of knowing."  Creed may be Angela's dad, or he could be her dad's accidental lover in the mud.  Brain bleach, aisle 4! ;)