Jen noted it had some sort of liquid in it, so she opend the box, ran her fingers through the stuff, to her it felt like cum, just then the head of a snake poked out, she was always fascinated with them and petted it, having not even gotten ready for school she was still pantieless.
In that moment the snake had licked Jen innaffection, befor migrating down to her pussy, the liquid acted like a drug, keepin her relaxed as the snake pushed into Jen's pussy. Jen moaned with pleasure. As the snake made it's way in, Jen climaxed, soon the snake was all in, but just when she thought it was over a cock bursted out causing immense pleasure. When done there was a note: Meet the cum snake, a critter who'll bring pleasure, this snake acts as a parasite and can spread to others by way of sex... Jen then decided once she was normal to go to school.