The origin of the word come from the BBC series "The Young Ones" where Vyvyans pet hamster was called SPG witch is a name of a popular Russian recoilless gun.
2.) Noun, HAM-STUR, (See ninja) A cute little animal known for its sudden violent reactions to little children holding it. Hamsters have been known to kill at any impulse, even if there is no need for eminent death of the child.
2.) The hamster ate the nine year old's whole birthday party because someone dropped a spoon.