What would happen if the grim reaper killed himself?

Neither - the vampire is already dead and so is essentially safe from the Reaper, but likewise, the Reaper is the Lord of Death and cannot be killed, so the vampire would be unable to defeat him.

you are going to be killed too...

Mankind would cease to be, then.

some would say he did but most of of them would say he killed himself with a gun

You would be electrocuted and killed instantly

we would not get killed unless you recycle mebye

they would be killed by Brahma. By rape

then you would not have germs killed

what would happen is yoda would die and the jedi would be suffering a loss of a great hero

Candy tells George that he should have killed his dog himself because it would have given him a more pleasent ending.

You would create a paradox of before and after.

It would die and fall down into the ground.

He would have been killed

they would have got killed or tourtured............

They would be arrested or killed.

Whales would become extinct.

Because he killed himself first. You can be sure he WOULD have been executed had he gone to trial. Because he killed himself first. You can be sure he WOULD have been executed had he gone to trial.

lesson the chance of genital warts

You'd eventually get arrested and sued

What's happening right now, on account of he already has been killed.

you would die would suffer hope it NEVER happen to bad it did

he would get killed or turn the other way

The horcrux inside Harry would not die

A reaper gathers or reaps crops, so a person with this name would gather crops.

He would have been killed. He is currently resting in peace at the bottom of the ocean as US troops put his body there after performing all of the proper right of death/burial by his religion