My fuel guage has been weird today..
When Im driving it randomly goes up past full by like 2 inches.. [it gets to like horizontal].. and then will randomly come back down like a minute later..
What the heck is going on?

something in the wiring from the gauge to the sender to ground is loose.
Most likely a connection on the sender itself, but I'd check the connector in the trunk, and the ground screw on the front of the pass side trunk support first just cause they're easy to get to.

There is a techref in the electrical basics sticky on troubleshooting the fuel gauge.