It's a college term she's using incorrectly which is supposed to be reserved for getting drunk and waking up in a one-night-stands bed only to have to find your own way home the next morning [as you don't have a car or a ride].

I thought she meant the parents caught her with their son but with her sneaking out of the house that wouldn't be very logical.

Or neither - There are 50,000,000+ Americans [so this figure doesn't include the rest of the world] living with their parents past 21 due to economic reasons, not EVERYBODY can have a job that can support themselves and retail level jobs hardly ever are enough to cover basic living essentials. 40 years old and living with your parents? Ya, probably a loser. . .But early-mid 20s?. . .Not so much in this day and age.

Ya my fiance lived with his parents when we first met (he was 22). Jobs don't pay what they used to and prices of everything keep going up. The first year we were together I lived in a dorm while he lived with his parents, and once I moved out of the dorm we got a place together. It's not that uncommon now and not that big of a deal, unless said person is mooching off their parents and not working and not looking for a job (if they lost their job and moved back in that's different). As long as the guy has a job and pays for stuff it's no big deal. I never had to do the walk of shame though. His parents let me stay over 3 nights a week :) although we never did anything under their roof out of respect for them.