>>14725781She must have been with him for some time on the sly. If you look, she's got quite a small mouth so his BBC has stretched it out a bit from excessive sucking.
On the attached picture you can see where skin stress and muscle distortion has occurred from his large erect BBC stretching her mouth out.
Girls of her age should not have blowjob lines unless they have been sucking large cock a LOT. It's interesting, just as a generality, once you notice this you tend to look out for it on women and it shows who are the ones most likely to give head.
