Psycho/Victim Mood Penguin
A cute little critter with a dark side. I needed a bit of a Voodoo doll for a problem I'm working though, and I don't knit... or practice Voodoo... so I fell back to the trust 'ole 3D printer.
This little fella will happily take a left handed knifing between the shoulder blades, or a right hander under the ribs... or both. (knife included, batteries not required)
If on the other hand you're feeling less approachable, you can arm your little penguin to warn others what may happen if they ask a silly question.
There are also less psycho options, including a body with no holes for knife like implements, more sane eyes, and different length beaks (the medium one is the one in the pictures).