I've heard a story of one individual on a forum ordering someone two Papa John's online in return for another forum member sending them 10,000 bitcoin (or something like that) but I've never heard of people sending thousands of bitcoins to "occupy wall street" (who, exactly?) so they could buy pizzas. Where do you remember hearing that?
That was the famous bitcoin pizza[1][2] (worth $120,000,000 as of this writing), and it is believed to be the first real-world purchase using bitcoins.
[1] Original thread: https://bitcointalk.org/?topic=137.0
[2] The pizzas: http://archive.is/a1IRg (archive link so we don't hug laszlo's servers to death.)
I'm not one for all that "if you bought $100 of bitcoin in 2013..." stuff, but wow, that first sentence...
Though I guess if he had 10,000 to blow like that, he probably had a lot more, and probably isn't short of a few now. (Hopefully anyway.)
I think I'd rather be someone who paid 10,000 for two pizzas though (which I assume was more or less the going rate in 2010), than being one of the people who didn't or couldn't take him up on the offer - two days later and nobody had done it.