You try to resist, but the plant releases a spray of green, sickly sweet smelling liquid all over your rear. It's cold, and everywhere that it touches you, your muscles involuntarily begin to relax. Within seconds, the pod-tipped vine is able to slide inside without opposition.
And it just keeps on going. You thought it would stop once it got that pod into you, but the vine continues to pack more and more of itself up into your guts. The experience is in no way enjoyable, but neither is it as torturous as you thought it would be. There is no violence to the action, only the gentle but inexorable push of the vine slowly twisting and crawling its way through your intestines. There is discomfort, but it's more of the achy variety than stabbing pain. There is also an odd stretching and slightly nauseating churning sensation throughout your insides as an ever increasing length of smooth flexible vine inches along through your digestive tract.
Minutes turn into hours, and you can still feel the plant's constant progress deeper into you. Even worse, you can see it too. Immobilized as you are by the tangled thorns all over your body, you have no choice but to lie there and watch as your abdomen slowly distends from the mass of plant matter that continues to fill you. Is it ever going to stop?