Nightmares

Two nights ago, I dreamt that sleep was a series (i.e., a sum of an infinite number of terms) ending in my digestive tract. But I couldn't figure out how to add it up so that it wouldn't diverge. Written down like this, I suppose it doesn't sound that disturbing, but you wouldn't like it if a series was diverging into your small intestine. I woke up, evacuated my bowels, drank some water, and was able to fall back asleep. Math nightmares are the worst.