When you're
looking for Slenderman, but you're about to
shit your pants in fear, so you try to lighten the mood by calling him this name (which he finds quite insulting) and saying it in a
high pitched and funny voice. When attempting to find Slenderman, it is yet to be proven if this will increase your chances of success in finding him, but it will make your twitch viewers piss themselves with laughter if you say it with enough pathetic fear in your tone.