Sonic The Hedgehog

@Miss Shy  
Ooh! you’re very good at descriptions  
I bet it’d be fun to be tickled by you

@Miss Shy  
Now I’m imagining a situation where their legs get moved upright, the soles of their feet pointed up, and another of those pendulums drops in.

See, you don’t know the context of this.
 
This is just a pendulum set to lower every other swing until it reaches their bellies, then it stops lowering, at the perfect distance when the feathery pendulum reaches your belly.
 
It starts out at the top, not doing anything but going back and forth, taunting you on how it’s going to attack.
 
Then, over time it get lower, and you can see the feathery bristles in fine detail. It gets closer and closer to your bare belly, your struggles in utter vain as the shackles are too strong.
 
It starts to brush your belly, you start holding back giggles, sucking in your belly only delays the inevitable. Eventually, you cannot hold it in any longer, and your stomach extends, and you start laughing uncontrollably.
 
It’s not a constant onslaught of tickling, but a constant interval. You know when it’s coming, and yet you laugh all the same. You hear your friend laughing along with you at a slightly delayed interval, but you two cannot help yourself, and the tears start to flow down your face.
 
You’re just praying that they don’t get to your feet…

@Jumpitydude  
That might be baleen. >8D

@Background Pony #6907  
What I mean is that it looks like it was made to go in this device (it does look like they’re in a machine), not to sweep floors. That would also mean it could be made with feathers instead of hard bristles.

Hooray, skin infections. :D

@Background Pony #6907  
Not soft*

@Jumpitydude  
Like I said, I’ve been doing this godforsaken job for the past 8 years, that broom is soft at the end!.
 

 
those are bristles, rough edged ones. Not soft and feather-y ones.
 
So even then, this would be more uncomfortable. But hey! Go with what you like.

@Background Pony #6907  
I can’t help but feel that it was made exclusively for this purpose, not re-purposed. So, no disgusting stuff.

@Background Pony #D867  

Yes - the Swinging Tickly Feather Duster of DOOM! :DDD

@Background Pony #6907  
just think of it more like a feather duster

As a guy who’s been working as a Janitor for the past 8 years of my life:
 
I’ll tell you right now, that usually a broom like that is usually covered in old candy, food, tons of disgusting lint and even metal.
 
So… looking at this makes me a little nauseous.

Haha, tickle torture!  
I wish there was a nude edit but still awesome.