My fiance told me about this new app called Dumbstruck where you can send someone a message and when they open the message the app records their reaction and sends it back to you. OMG! I immediately knew I had to use this to tell my best friend I was engaged. I'm sooooo happy I was able to record her reaction. It's absolutely priceless!
She's a little loud though so you might want to lower the volume on your computer a little