You sheepishly explain that you don't wear underwear or pajamas

Which is followed by a long silence. Rebecca looks even more embarassed to the point that she seems to be cringing and her mother is standing in front of you, looking very stern.

"Please tell me you are joking," she says quietly.

You shake your head. "No, Mommy."

Rebeccah's mother lets out a long sigh.

"This will not do," she says without taking her eyes off me. "Rebeccah, please go to your room and bring me a few pairs of your underpants and a few nighties."

Your girlfriend meekly leaves the room. This can't be going where you think it's going. Rebeccah returns quickly and hands a small stack of folded clothes to her mother. Her mother puts the nighties and panties in the top drawer, but before closing it, pulls one pair out and sternly hands them to you.

You hold them up and look at them stupidly. They are white lace bikini style panties, probably a size or two too small.

"We will give you some privacy, so you can make yourself decent," sniffs Rebeccah's mother, turning on her heel and gliding out of the room. Rebeccah follows meekly at her heel, and then you are alone in your new room.