For a moment, you are unsure. But then you suddenly recover your resolve not to be Sam's toy. Or at least some of it...
"No! I am not going to go crawling into your belly. I'm not your food, at least not that easy."
"Going to go down fighting, eh?" Sam responds. He looks like he is pleased by the challenge, and you feel pleased too. You hope that is from standing up for yourself, and not from having pleased Sam. Perhaps fortunately, Sam does not give you time to examine your feelings.
"Pam, get on top of her and hold her steady while I eat both of you."
"Well, I intend to hold her down, but she is not going to be steady, at least not if I have my way." Pam announces. You are not quite sure what she means, but she is grabbing you and pushing you down onto the bed. You struggle and resist, but not at all successfully. In the back of your mind, a voice is saying that this is pretty feeble resistance for your objections to being Sam's toy to be real. You try to hush it by pointing out that it is pretty easy to force a girl down if you don't want to stay up yourself, and even if you did resist harder, Sam could join in and make sure you lost. At least you are showing some resistance and it's not your fault that you haven't a chance of success. You aren't some shameless slut he is playing with. You are still a decent girl... or at least sorta...
But by now, Pam has pinned you to the mattress, and her idea becomes clear as she puts her head between your thighs and her tongue touches your most sensitive spot. Her own damp desire is right above your face. well, now that you have proven that this is all their fault, you might as well enjoy yourself... Your arms encircle Pam's waist and you pull your face into Pam's womanly center and start exciting her for all you are worth.
Pam is soon driven over the top by your efforts, and you have a brief thought that this may be your last moment to escape as she collapses from your efforts. But then you feel her legs tighten around your head. Looking up, you see Sam is starting to swallow her, and it is too late to get free. Well, you give yourself points for at least still being able to think of the idea, and return to pleasuring Pam.
She responds with a bigger explosion, and then you feel Sam's tongue joining yours in stimulating Pam's loins. This produces an even larger climax of passion as she explodes into a thousand pieces.
But now your own head is entering Sam's maw. You try to tell yourself it is only a co-incidence that this is when you finally climax yourself. You may be right as you and Pam now both convulse together [her's being much the greater, to your envy] as your breasts are pressed into Pam.
Sam's mouth widens a bit more and his lips start to slide over your torso. Now it is Pam's marvels that are being forced into you, to her pleasure. Now her head is pressed down, and her tongue goes deep into your depths, causing your most amazing climax so far, and it is quickly followed by one that burns you out.
All that is left of you outside is your legs, and they are sliding inside. Your lovely thighs are engulfed, and then you trim calves. You wiggle your toes a few times, but then they too are swallowed. A couple of swallows more and you are part of a big ball of flesh that Sam is digesting. A wave of pleasure overwhelms you as the last of you enters your new home.
As Sam settles back to digest you, you realize you are not completely helpless. Oh, you are hardly getting free, but you can decide if you want to stay as two girls, or try to return Pam to being your boobs. She certainly deserves that, but if you try it, she might make you her toy. Still, the risk might be worth it...