"Crash"

A few months ago I was working at the motel and Juliana was with me. When my mom got home I said that Juliana was really tired and that she would probably crash when we got home. She then proceeded to look at me and ask what that meant (she ask for definitions all the time) so I told her it's when you get really tired you just fall asleep as soon as you can. Yesterday at daycare her friend fell asleep on the couch. She told me that R crashed. It kind of scared me because I thought of an accident. she soon corrected me by saying no mom she fell asleep. It was pretty funny. She now uses it on a daily basis.