it's my life

Little Johnny comes home from school one day with a note to his mother. It read, "Please teach Johnny the difference between boys and girls."
So the mother took Little Johnny upstairs to her bedroom. She said, "Johnny, I want you to take off my blouse." So he did.
Then she said, "Johnny, now take off my skirt," which he did.
Then she said, "Johnny, now take off my bra", which he did.
And then she said, "Now, Johnny, take off my panties," which he did.
And the she said, "Now, Johnny, you have to stop wearing my clothes to school."