Photo: Getty Images

Twitter was reminded on Sunday that everything they know is a lie.

Okay, maybe that's a bit of a stretch, but many were shocked to find out that "Sasha" is actually just a nickname for the former president's youngest daughter.

So what is her legal name, you ask? It's actually Natasha.

Twitter user Ashley C. Ford reminded everyone (or in many cases, informed them) of this fact:

So how did Ford find out? Well, a year ago the New York Daily News reported that "Sasha" was working at a restaurant job on Martha's Vineyard, and going by her given name.

So, for the 2 of you who read that story and already knew: congratulations.

The rest of Twitter imploded:

Some wondered how she could be in the White House for 8 years without everyone knowing:

How deep does this really go??

The shock was palpable:

The feeling is one you won't soon forget:

R.I.P. Everyone's blissful ignorance:

h/t: Mashable, Huffington Post, Refinery29