When big hanging tits become more skin then tits:
http://galleries.cosmid.net/00641?aff=2225771
Nice big haining tits!
http://bigtitsnews.net/abbi-secraa-high-school-girl-with-overdeveloped-breasts/
Way too big. The caption says perfect, but these are too big. They are bags of skin at this point in my opinion. They become awkward, maybe uncomfortable for the chick, it takes too long to lick to entire boob..., seriously out of proportion.