I eat two of them, and use the rest to attract and capture birds.

I throw a seagull at the next poster.

It flies over me and I quickly dodge it's poop.

I throw vitamin at the next poster

Wait... Alcohol & vitamins react, don't they?
OH SHI-

I throw the Dancing Queen to the next poster.

I overthrow her and become the true monarch of dancing.

I throw my tap shoes at the next poster.

I use them to make sparks come off my feet when I ride.
Yeeeeeaaaaahhhhh!

I throw Linux to the next poster.

it's over-complicity confuses me, and my head explodes

I throw rain at the next poster

I block it with my umbrella.

I throw my umbrella at the next poster.

I use it for the heavy rain someone sent me in my e-mail.

I throw the Internet at the next poster

I hide it atop Big Ben, and assign a hoard of clockwork robots to guard it.

I throw the minute hand of Big Ben at the next poster (it's funny, because although it is a minute hand, it's not exactly minute! AHAHAHAHAHAHA!!!).

I paint it yellow and nail it to my garden fence.
^{Because I can}

I throw a carrot at the next poster.

I catch it, peel it, wash it and chop it up. I then use it in my stew.

I throw stew at the next poster.

I scream in terror. I just had stew...

I throw a rock with an engine in it at the next poster.

I run away from it as I wonder why the rock is moving and making engine noises.

I throw my fear at the next poster

I place it in a box and shake it around, making it worse.

I throw a bottle of champagne at the next poster.

I shoot it out of the air and make it rain champagne (and shards of glass).

I throw a possessed cat (that is also on fire) at the next poster.

I banish the possessed spirit from the cat, and douse the flames. I nurse it beck to health tenderly over the next few months.

I throw a dead shrew at the next poster.

"Kids! We're eatin' tonight!"

I throw Derren Brown at the next poster.

I use real magic to turn him into a toad.

I throw a magic wand at the next poster's eye.

I snap it in half and throw it away without a second thought.

I throw a canister filled with the Scarecrow's fear gas at the next poster.

Thankfully, I remembered to bring my gasmask with me. I put it on just in time for the gas to land near me and affect every one else around me.

I throw heavy metal music at the next poster

I headbang to it, and the awesomeness of my fringe causes all onlookers to explode.

I wonder why you did not throw anything.

I throw something that is asymmetrical at the next poster.

SWEET! A GIANT ANEMIA! (didispellitrite?) I call him bob...

I throw THE Phoenix Wright at the next poster. (OBJECTION!)

Puts up force field and blocks Phoenix wright. (REJECTION)

I throw the Giga Drill Breaker attack from Gurren lagann at the next poster, (stop that one)

I create a wall of fluorine to block the attack. It shatters, but reacts with the drill, causing it to mess up and stop working.

I throw a stuffed wolf at the next poster.

I practice wrestling moves on it.

I throw the next poster's corpse at the next poster.

I dance on it. Take that, other version of me.

I throw an ivory back-scratcher at the next poster.

It deflects of the sword, on Ichigo's back.

I throw a guilotine at the next poster.

it lops my head clean off

i throw an expensive hoodie at the next poster

i grab it and sell it for profit

i throw lit cherry bombs at the next poster

I jump around madly trying to dodge them.

I throw my PS3 at the next poster (long pause) I hope he/she throws it back.

Seeing that my Xbox had broke a few days earlier...no, you're not getting this back. Hey, don't blame me, blame Microsoft.

I throw a failing forum thread at the next poster.

Hey, this is mine! Where did you find it?

I throw a defibrillator at the next poster.

gets hit in the head a looses a tooth

the tooth flys to the next poster

I put it in a bowl of soda and watch the results with amusement.

I throw a bottle of lemonade at the next poster.