Tiny men in a spaceship explore the giant's body POV

An exploration ship of unknown origin arrives at the planet of the giants to gather information about these beings, and they come across a young, athletic, and dominant boy. But they have no idea that these beings are very cunning and can perceive even the smallest objects; upon noticing the spaceship, they teach the crew not to mess with a superior species and have some fun with them, leading to a happy ending for the giant man.