I’ve seen one of my chicas barely manage to take my cock (6.75”BPEL) at the beginning of a session and then, after I’ve got her totally and gushingly aroused, have seen her (in that same session) swallow up an 8x6 dildo like it was nothing, all while screaming, “more….more!!!…MORE!!!!” While there certainly IS an upper limit to what a chica can cram into her pussy, arousal plays a huge part in how much she’ll enjoy pushing into her twat.
Additionally, I would agree with the “getting past the cervix” line. However, sometimes this is a great thing where you’re pounding the hell out of the cul-de-sac (which, in and of itself can be very stretchy) and she’s gushing like a geyser or it can be a thing that she’s finding uncomfortable and kind of getting a “scrape-ey” feeling every time your dick (or sex toy) grinds the cervix on it’s way to the cul-de-sac. Again, this can come down to arousal.
Lastly, although it’s seldom mentioned as a technique around here, there is something that I use on all of my bitches which I find quite effective: sex talk. When I find a chica is squirming in “pain” (really usually just discomfort that she’s having a problem getting around) I hiss terrible and evil sounding power trippy shit into her ear while dominating her in a kind of bear hug. It could go something like this: “what’s the matter bitch, you can’t take that big dick?” all the while grabbing a handful of hair and making her stare me in the eyes as I say it, “fuck that, I know you like that big dick….” hold her down, make her look at you if she tries to look away, keep her head under your control using her hair, “that’s right baby, you’re not fooling me….i can tell you like that big dick….” here is a good place to bite her neck, “…if you don’t like it then why is that pussy so fucking WET?” and etc.etc.etc. If I’m given enough time to work a chick over with my words I swear I could probably ram a mack truck up her pussy.
Arousal, arousal, arousal.
And here a note: total, pussy gushing surrender to my cock hammer is what I’m calling “complete arousal”. Diddling a chica’s clit to orgasm, while quite pleasurable to them IS NOT (in most cases) what I would call their TOTAL AROUSAL. We men experience our own sexuality in much the same way. Sure, it feels good when we “squeeze one out”, but this is hardly as erotic or enjoyable as a tunica busting session with a chica where our dick literally feels as if it will explode- not THAT’S AROUSAL.
If you always remember to fuck your womans MIND just as much as her body, I would hazard to guess that there aint much of an “upper limit” to what you fuck her with. Sure, some of that dick may wind up on the outside, but hey, who cares, have her reach down and squeeze that part….mmmmm! that’s another very nice trick!