You are my slave until the chastity device comes off. You will obey. If you don't, you will never get out.
That means if I ask you to do my laundy, the only acceptable answer is "Yes Mistress".
If I ask you for a foot rub: "Yes Mistress".
If I ask you to give me oral pleasure: "Yes Mistress, Thank you Mistress". Understood?
Don't look so pissed! I know you always thought I was such a bitch. I don't like you much either. I'm so glad we agreed on settling our differences in such a fun way!