You've always thought Barbie was a total babe, even as far back as high school, when you asked her to the prom. As you look at her now you know just how sexy she is, as her figure is exactly the same as your wife's, except that she dyes her hair blonde. But you have to put sex out of your mind if you want to get out of this situation without embarrassment.
Embarrassment... that makes you think about what Barbie must be thinking, seeing you all naked in the humbler...
"Say, your penis is getting all hard," she says excitedly. "Is that for me?"
You want to apologize, but you can only grunt. It's so embarrassing!