Yes - absolutely.
As a woman gets fatter her cunt becomes a veritable cave!
The science behind it is very interesting. As a woman's body mass increases, as more fat cells collect between muscle and skin (in the hypodermis), the blood supply to the vagina is effected, causing the walls of the vagina to retreat up further into the woman's body, increasing the capacity of the vagina, of course. The problem is with crash dieting. If a very heavy woman loses weight too quickly her cunt can collapse in causing her to be unable to have sex with anything larger than a short pencil until she can undergo restorative therapy; e.g. gradual dilation.
NO - OF COURSE NOT, YOU DUMBASS!!