That’s mad, Jack!
On the Reaper forum, my standard response to that would be, "No, I'm Mad, the hat's Jack..." There's an inside joke there, which is why my Reaper forum sig contains the line, "Oh, not you... We named the hat Jack." (A play on the line from the PotC movie.)
Another forum member who was a fellow member of the New England Miniature Painters Association was driving with me to the CT Ren Faire when I mentioned my hat (the one in my avatar pic, which I'm never without),,, She paused, and then said, "Oh, you're wearing a hat... I hadn't noticed it before....". Apparently, the fact that she'd never seen me without the hat in the entire six months we'd known each other had somehow caused her to never actually fully process the thought that I was wearing one, lol.
So I paraphrased the PotC line, "Oh, not you... We named the monkey Jack..."
Unfortunately, she's not a movie watcher and never saw the film. But I decided to put it in my sig anyway.
(I also joke that "Mad Jack" is actually my real name (first name Mad, last name Jack - what, you never heard of a guy named Madeleine before?)...
I've got a fun one.
Describe to a child the oldest piece of technology you've used.
An American Civil War era Lorenz Model 1874 rifle bayonet? It's the oldest manufactured piece of technology I own.
It's a big knife you stick on the end of a gun to stab people with when they get too close to shoot 'em with it.
(Fun fact: the first screw-cutting lathe was invented in 1770, and accurately-sized metal screws were in mass production by 1797.)
As for non-manufactured technology, I'm pretty sure a "poke-y-stick" is self-explanatory since people have been using them since before we were people.