"Modern Day Pennywise" is equally funny and disturbing in the way that 'Ren & Stimpy' was bizarre and upsetting.
Like it or not, Pennywise is going to be the costume that you see everywhere this Halloween and some people have been getting into the spirit early and dropping into drains to creep people out. Except instead of promising fun and floating, they're promising, eh, something else.
And it shouldn't need to be said but don't try getting into a sewer or a manhole or something stupid to freak people out. That's one really unfortunate potential way to die.