(I've got a lot but we'll go with this)
I suppose I'll have to add the force of gravity to my list of enemies. (Lemony Snicket, The Penultimate Peril)

@next person: What's an alt dimension version of you doing right now?

Doing something productive, unlike me.
The object next to you could save your life. What is it and how could it save your life?

A desk, wow. Well, in the case of an emergency, i could hide behind it.

Next person - The object you are sitting on suddenly is a bucking bronco. Deal with it. :p

I get off my chair and stare at it.
If you were in a movie and your favorite song was playing in the background, what would be happening in the movie?

I would be itching for a piano to play along with the song. And my sister would be singing off tune. And my brother would be pretending to play the drums even though I'm pretty sure there are no drums in it. Mom would be staring at us all like we were going crazy. Ah, living up to a family name can be horrifying.

Next person - The thing on the left of you is now your greatest fear.

I am now terrified of a half-eaten sandwich. Not a whole sandwich. It has to be half-eaten.
The thing on your left can talk. What does it say?

Oh, let's think...oh, that's right, it can't. :P

The object says - I am not food. Don't you dare eat me.
Well, there goes a perfectly good lunch. *sigh*

Next person - You are on an abandoned island, what is the one thing you bring.

...my entire house? if not, just a book

next: you can only speak (and write) in rhymes from now until the end of today

I am starting to hate this thread.
If I have to keep doing this, I'm dead.

You have to eat the next thing you see.
If not your device, then what will it be?

Ignore. :P