I slip a $20 bill into Superman's hand. He looks at me, nods, and proceeds me to put me on Earth.

 

The next person is in a street fight with Superman.

I help him fight crime by threatening him to use Kryptonite if he wants to fight.

 

The next user is the villain that Superman and I fight.

I fired a cannon shooting molten kryptonite at Superman, killing him. I also vaporized Plutonium84 in the process.

 

I throw the next user into a tank full of concentrated sulfuric acid.

I am a base, and my death was dignified by neutralizing the acid, saving millions of people from being dissolved.

the next user is going to be killed

By natural causes several decades/centuries/millennia from now.

 

The next person is crushed by 2.4x10^6 metric tons of feathers.

Thankfully I'm still a living slop of ash on the ground so I don't mind to much.

 

The next user has a heart attack when the ashes start talking to them.

I perform surgery on myself and suck the ashes up in a vacuum. 

 

The next user has their burger poisoned by me.

As I'm about to eat the burger, I trip over a rock. The burger flies into some person's mouth, where they, by reflex, swallow it. 

 

The next person ate the burger.

The poison contained an irritant so I puke it up before it takes effect.

 

The next user is on one of the planes during the 9/11 bombing.

However, I was sick that day due to extreme radioactive contamination. As a result, I throw up the burger before the poison could kill me. It also removes some of the radioactive contamination out of my body, resulting in a highly radioactive burger which falls onto the next user.

 

The next user has a radioactive burger fall on them.