This is the app being used.
Go to Action Movie FX.
I am choosing MISSILE ATTACK for the tutorial.
Here's a tip.
Okay, now film your subject.
After you are done, the video will process to add in the effect.
You can move the red target to choose when the missile will hit.
After you press DONE, you can preview the video, delete it, or save it and share it.
"Die, cupcake, die!"
Here are the sharing options.
Here's another example video, featuring Demolition Rock.
Pretty realistic...You could fake out some people with this...
Hope you had fun! Now, the next time your cat scratches you, or your car battery dies, you know what to do...