You were not careful and got into the house of the giantess, she took you for an insect, so she hit you with her huge slipper, and when you woke up, she decided to play with you, because she is the mistress of the house, and you are just a tiny helpless guy. Now she will bounce on you with her giant ass to test your strength, put you in her panties and masturbate you like a microscopic dildo
