I'll use Wisconsin as a jurisdiction.
If you file a false death certificate, that's a felony. But you probably wouldn't go that far.
It could be disorderly conduct. In Wisconsin disorderly conduct is described as follows:
Whoever, in a public or private place, engages in violent, abusive, indecent, profane, boisterous, unreasonably loud or otherwise disorderly conduct under circumstances in which the conduct tends to cause or provoke a disturbance is guilty of a Class B misdemeanor.
There's also a statute prohibiting "Disrupting a funeral or memorial service" but it won't apply in this case unless disorderly conduct applies. It would raise the penalty to a class A misdemeanor (or a class I felony if you somehow did it again after being convicted once.)
On the civil side, there could be an action for intentional infliction of emotional distress, either for the false report of your death, or for a "corpse" suddenly coming to life. This kind of lawsuit requires "extreme and outrageous conduct", but if this isn't, I don't know what would be.