I'm in mind of a movie I just watched again last night.... "Grosse Pointe Blank" - in which the weapon of choice was a ball point pen. Ball point pen to the jugular is certainly as deadly a weapon as a plastic knife. I can't imagine that a plastic knife is capable of holding any edge, unless someone can correct me here... ceramic maybe. HOWEVER plastic knives could be used to kill someone just as a ball point pen could, by puncture. However wrestling someone into position and puncturing someone's jugular would be a heck of a lot harder than slashing with a long edge,especially if someone had interfered.
