Have you been practicing your evil scientist laugh? You've tried the old favorite: Mwuhahaha. But it wasn’t really your style. Then you tried the Joker cackle: HAHAHAHAHAHA. But again, not really what you were looking for. You've experimented with Dr. Horrible's, quiet frankly terrible laugh: A-haa-aah-haa-ah. Just...please, don’t use that one.
Something even more frightening than an evil laugh is a syringe. Those things are just creepy looking. Come toward someone with this Radioactive Glowing Syringe, and they are sure to runaway screaming. Even the plunger looks evil, maybe because it is made of creepy skulls and bones. Just don’t actually stick any one with this syringe. We're not exactly sure what is in it. Maybe it's a glow stick like the specifications say, but maybe not. And, on second thought, this syringe my be so scary that you wont even need an evil laugh.