You caught the shrinking virus and shrank to the size of an ant! You had to be taken care of by your mother, but she put in the bare minimum effort and only fed you and provided you a place to sleep. However, after almost getting carelessly crushed by your mother, she decides that you can't be left in the house alone when she goes out, so she's hires a "babysitter" to make sure you don't get lost or stepped on.
This particular day, your mother left for the night, leaving you with the sitter. Almost immediately after her car is out the driveway, Diana walks over to you, her barefeet slapping the ground. "Look little man, I know I'm supposed to be watching you tonight, but there's a new club I want to check out with my boyfriend. Now I know you like feet, especially giantess feet... so I'll let you lick and worship my feet if you don't tell your mom, what do you say?"