That low, raspy voice girls use when they are being 'serious,' or when they want to be taken seriously, especially among themselves, especially but not only at the ends of sentences. If the information demands it or if the personal style of the speaker is a monotone anyway whole sentences can be intoned in 'girl growl.' There is no pitch on these sounds, just a low rasp.
"Then he was like 'no way' and she was like" breath quote, "'whatever,'" she girl-growled, looking very intently over her pink, pointed Barbie-glasses straight into Tiffany's eyes.
by 3ric September 05, 2007