This topic is a place where we can all come up with "Hey Jackenstein" memes. An example of one such meme would be something like this:
Hey Jackenstein, what's the first thing I should do when I start a new Minecraft world?
"TAKING LO G"
Basically you just ask a question that could be answered using various voicelines from Jack's Pumpkin. Have fun yall! I'll react to to my favorite ones with 
if that matters to you.
Doesn't have to be a questions either, you could also say something and have him respond with "YOUR RONG" or "YOUR RIGHT"
Hey Jackenstien, was that the bite of 87?
YOUR B IGHT
IS
RONG
Yeah that was the bite of '83
MY NAME IS DAVID, DAD, I WANT SOME ICE CREAM
Upon their knife the roaring knight leans
Man there's not enough "Hey Jackenstein" here
Hey Jackenstein, should we do more of these?
YOUR TOO RIGHT
Hey, Jack? What’s the other type of clock besides digital?
A N O LOG
Hey, Jackenstein? What’s one plus one?
TOO
Jack, your mother was captured in battle.
MAMMA M.I.A.?
Jack, what is a word for something having a large width?
LONG
Jack, do you have any hobbies?
I RIGHT LONG TOOM OR LOG
Jack, what is Kris’s favorite food?
M O SS
(s from when the pumpkin says IS)
M O SS
M O SS
M O SS
Hey Jackenstein, what should I flip this bacon with?
"T ONG"
Hey Jack, I just made pasta!
Mamma Mia!
Hey Jack, what am I doing?
YOUR TAKING TOO L
hey Jack what's the 15th letter of the alphabet?
O OO O