Jack and the Giant

When Jack decides to attend a rural university while he tries for his degree in animal medicine, he also inherits his great uncle’s house. With the house comes a beat up old car that he happily sells to a strange old woman for a little bit of money. When he wakes up the next morning, he finds the pile of bills has somehow disappeared from his nightstand and in its place is a large, strangely shaped seed and a note promising that if he plants the seed he will have a fortune beyond his wildest dreams.
Dejected but without any other options that he can think of, Jack plants it and goes to bed. The very next morning, he wakes to find a truly massive tangle of vines stretching into the clouds. As any adventurous young man would do, he decides to climb it and finds that things are a lot larger above the clouds. When he’s caught exploring a huge house by the equally huge homeowner, it turns out that the man is just as curious about Jack, who fits into the palm of his hand, as Jack is by the giant.
The giant receives few visitors, especially ones as handsome and miniscule as this one. When his new friend becomes curious about what a giant keeps in his pants, who is he to turn Jack down?