Kill Using Three Words

[Yureina]

Machine gun it!

 

[Trivun]

Using Death Note!

 

[Yureina]

Shooting the bugger!

 

[Malyc]

*Shot the bugger*

 

[CulixCupric]

death by Cthulhu

(nation of R'lyeh [http://en.wikipedia.org/wiki/R%27lyeh])

 

[Malyc]

Struck by lightning

 

[Yureina]

Pummeled by books

 

[Malyc]

Shot Through (the) Heart

 

[Yureina]

Crushed by cars.

 

[Shadowcreed]

Hit by Facepalm

 

[Verzin]

kill with 愛 (ai)
EDIT: should have read prior responses more carefully. I just restated love in a different language.

 

[Cyrus Hanley]

Bang, you're dead.

 

[TheLastSamurai14]

FUS RO DAH!

 

[C F]

It's super effective!

 

[Dalek Caan]

Fire the Laser.

 

[C F]

Five Bolts Fallen.

 

[Yureina]

Smacked by Bear

 

[Nouw]

Smacked by pony.

 

[RussetRanger]

Zeeky Boogy Doog *explosion*

 

[C F]

NOT THE BEES!