I once woke up having missed an entire day, thanks to a severe overdose of alcohol. Passed out Saturday night, came to Monday morning; fortunately, Monday was a holiday and I was able to sepnd another day recovering.

This was long ago, Labor Day weekend of 1966, when I was very young and stupid and before I had any experience of other recreational drugs. I believe I learned my lesson, and I know that I never again ingested more of anything than I could handle.