When she walked up to the brick apartment building, Tammy had déjà vu because it reminded her of her childhood home.

What is the origin of déjà vu, and what is its meaning?

Déjà vu, from French, literally "already seen", is the phenomenon of having the strong sensation that an event or experience currently being experienced has already been experienced in the past. Déjà vu is a feeling of familiarity, and déjà vécu (the feeling of having "already lived through" something) is a feeling of recollection

Deja vu is when your brain tries to understand the situation youre in by compairing it to other memories you have making it seem like you've done that something before.