20,736.
What’s 20,736?
Indication that you didn’t read the thread.
It’s funnier in person.
Thank god I wasn’t the only one who thought this.
Casu marzu left in a dumpster overnight.
What’s gross?
My cat barfing all over the floor
What’s grosser than gross?
My other cat helpfully hoovering it up.
It’s okay, she’ll hork it back up on your pillow in a few minutes.
Thank you for that. See, there’s always a silver lining! 
That’s just how I tell a story that really happened. It was getting more than a bit smelly in my office, and I coudn’t figure out why. Finally I opened one of my desk drawers, and what do you think I found? Someone usually says, “A dead mouse?” I then shake my head. “No, half of a dead mouse.”
I never did find the other half, or whatever might have carried it off.
The poop that peed?
My dog roots in the kitty litter box for nuggets.
What’s gross? Dog rooting in the kitty litter for nuggets.
What’s grosser than gross? When challenged on this, dog makes nice with a big sloppy kiss across owner’s face … 
When you open the refrigerator and the rump roast farts in your face.
What’s grosser than gross?
The father from Family Ties getting turned down to work at a supermarket.
You’re drinking Mountain Dew, and it tastes salty.
What’s gross? A four year old wiping his poopy butt with his bare hand.
What’s grosser than gross? He wipes his hand off on the wall.
What’s grosser than that? It was my four year old, and I had to wipe it all down. Thank Og for Clorox wipes.
I don’t get it.
I remember this one as a “Shut up!” joke.
“Mom - But I don’t like cornflakes.”
“Shut up and keep picking your scabs.”
Possum poop smells horrible and is grosser than gross.
Not very funny. Maybe you should work on your delivery. 
I know…it was supposed to be a joke but I was thinking too straightforwardly at the time.
Q. What’s grosser than grease on Olivia Newton John?
A. Come on Eileen.
(Better?)
Doug Stanhope’s version of ‘the aristocrats’.
Seriously. I’m not going to link it, because that would violate all kinds of rules, but if you’re interested, search for “Doug Stanhope aristocrats” on youtube.
And don’t fucking blame me.