'That was a good one!'
It seems to me that all of her lines throughout the whole movie were pretty good, except for that one. She speaks clearly and fairly consistently with all her other lines, then out of nowhere she blurts out "Tha wuh uh goo' one!", then afterwards changes back to her previous style of speech.
Good->Good->Good->Good->Good->One weird line->Good->Good->Good->Good->Good
Watching this movie over at a friends house, that line came, and we looked at each other and were like "WTF was that?"