first of all dont leave your shoes in the middle of the room that just isnt smart. second if they give you a round about time then you should be prepared.
i had people where i would fall asleep on their couch or with the kids when i was putting them to sleep and the parents would come hom and he would say “you just woke up didnt you” and then hed say “yeah we fall asleep all the time putting them to bed.” one time i woke up just as i heard the door open.luckily im very close with these people!
another couple i babysat for they called me to tell me they would be home at eleven. they showed up an hour later(it was only like 930) and he told me he does that so he can have more time should he need it.(that was weird)