You weren't sure how your gf's recent lack of sex drive could be in any way related to the new girl she was babysitting. But you tagged along anyway. She started to strip the girl down in front of you, ignoring your protests. Until finally... "See babe? I
[B/S] Folks are out of town, and they've asked you to come babysit. An entire weekend with her all to yourself. A few hours in, and you just had to pull those pjs off.