I throw some horns and red noses and face paint and several bottles of cheap liquor to all the users above Cheers!

I throw a minute of silence

I throw a performance of John Cage's 4'33", played at maximum volume.

I throw a real cage ;)

I enter a Faraday cage, send out a radio signal, and throw the signal at the above user.

^ *throws myself so fast that I cross the Universe and come back around the other side to tap the next poster on the back*

^ *throws super-hero The Flash to out-run you

*throws a tachyon ray that hits Flash before MysterD could throw them, and also hits MysterD*

^ *throws an ontological paradox*

ontological paradox...

ontological paradox...

ontological paradox...

EDIT
...ontological paradox...

...ontological paradox...

ontological paradox...

ontological paradox...

ontological paradox...

EDIT
...ontological paradox...

...ontological paradox...

ontological paradox...

ontological paradox...

ontological paradox...

EDIT
...ontological paradox...

...ontological paradox...

*throws a non-persistent causality loop*

*throws an attempt to correct the
ontological paradox...*

...ontological paradox...

...ontological paradox...

...ontological paradox...

...ontological paradox...

*throws an infinite loop*

Actually, scratch that: *throws a loop that's longer than an infinite loop*

I throw the smallest infinite into the biggest infinite and it gets stuck.

I throw some slightly used rainbows to the waffle above so they can have more colors in their life

^ *tosses a waffle iron*

Now you can flatten that waffle with searing heat!