
While it would be irresponsible of us to assume Moses was drugged up based solely on the fact that drugs were both acceptable and available at the time, Professor Shanon maintains that the scene described in Exodus, (involving blaring trumpets, bright lighting and thunder), fits the "classic imaginings of people on drugs" and further that "the seeing of light [that occurs in hallucinations] is accompanied by profound religious and spiritual feelings."
Why It Makes Sense:
The evidence isn't completely conclusive, but a closer look at our choices leads to a fairly obvious answer. Either:
1. God visited Moses and decided that he was the perfect spokesman for his commandments, (despite Moses's total lack of previous experience in the supernatural-commandment-liaison department), and all of Moses's friends and family believed him when he said "God spoke to me" and instantly stopped coveting shit.
Or
2. A group of extremely bored Israelites ate a bunch of easily-accessible mushrooms and imagined a bunch of crazy shit.

"Is anybody else freaking out a little bit?"
It was thousands of years ago. No Internet, no TV. There wasn't much to do other than eat plants, particularly when those plants led to conversations with God. It doesn't take a college professor to figure this one out, (although, technically, it did this time).
Still, this is a pretty huge deal. Everyone wants to say how dangerous it is to use psychedelic drugs, but Moses takes a few and comes up with a set of morally sound rules that have held up for thousands of years and, for some, serves as a reason not to murder the guy in front of you who's taking an annoyingly long time at the ATM.
Before You Go Trying It...
There's a really good chance that eating random mushrooms you find on the ground will kill your ass.
Also, we don't think we're speaking out of turn here when we point out how sloppy and half-assed the Ten Commandments are. If you're going to create a system of unchangeable rules meant to govern large groups of people, you might want to think "manual" instead of a "grocery list."

"We should be good with just this, right guys?"
Something with a FAQ page at least. "What about murdering in self defense? And what if your neighbor's wife is really hot? Do two Commandments cancel each other out? Can I murder my hot neighbor's stupid husband?"
Like most stoners (take for instance the ones in Pineapple Express, a movie you should totally see), Moses was probably too lazy to do all that extra work so he just sort of summarized, but the rest of us can agree that it would've been nice to have those answers.
To find out which of these stories involved the shameless screwing of an ingenious female scientist, read Four Great Women Buried By Their Own Boobs only in the new Cracked.com book.