What would you use...

In a murder?

I would use an icicle. Finger prints don't stay on because the icicle is constantly melting, and if I needed to get rid of the weapon, I melt it. Simple.

/discuss

Pocket knife.

Cut them 109273901273 times before you kill them

Originally Posted by Stumpy

Pocket knife.

Cut them 109273901273 times before you kill them

How would you dispose of it though?

Icicle is a great idea.
They tried to make ice bullets, but they didn't work.

Otherwise, I would use a nice sharp knife.
Under the 2nd vertabret is the spinal cord, so with a nicely aimed shot its instant death.
Or go for the heart under the left armpit.
Then wash my hands/arms in bleach, burn my clothes, soak the knife in bleach, and either use lye to dissolve the body or dump it.

Drill hole into room during day, insert hose, wait for them to come home and go to bed, fill room with carbon monoxide.

Edit: or something fun with Sodium Fluoroacetate