The best thing you've ever put in your mouth

Two black gals are shuffling down the road, when the older one asks the younger one, "Honey Chil'... how old is you??"

The younger gal just shook her head and said sadly, "Don' know fo' sho'... on a counta my Mama never done learn hows to count. But she be recknin' I's either 'leven or I's sixteeen..."

So the older gal says, "Tell me sumptin', baby. Wha's the best thang you ever done had in yo' mouth??"

"Sheeeeh"... says the young girl. "Tha's easy. That be bein' a big ol' slice o' aunt Maybelles blueberry pie, yes maam!!!"

The first gal shakes her head, chucklin, "Chil'...you's eleven!!!"

Hummh... ??
I don't understand black English. Brown English please.