The
instantaneous "break-up" that occurs between two people the day after "getting together." This normally unspoken end occurs between people who have been "
prom dating" or who have just engaged in a one night stand. This breakup is normally entirely mutual and
amicable.
Could also refer to a rather malicious end initiated by one person to a brief, one night romance.
Person 1: Hey, what happened with that
Alice girl last night?
Person 2:
Eh, we had fun, but it ended with a
wake-up break-up