sneaky sneku

used to describe a person who is so sneaky that nobody can see him, a bit like a snake, but not a snake.

Person 1: Hi there!
Person 2: I just stole your pants.
Person 1: (looks down and sees his pants gone)
Person 1: (looks up and sees Person 2 gone)
Person 1: WTF OMG THAT SNEAKY SNEKU