At around six in the morning, I threw up in my mouth a little, and it got caught behind my tonsils or some other hard to dislodge place like that. In my tired state, it didn't occur to me to rinse out my mouth for ten minutes. As such, I spent my time lying there trying in vain to sleep, all the while with the absolutely lovely taste of barf in my mouth.
I have to say, that really sucked.